Revise MBBS

Cirrhosis of the Liver

Cirrhosis of the Liver

Overview

Top-10 Western death cause. Irreversible end-stage of diffuse hepatocellular injury. 4 defining features: ENTIRE liver involved; architecture DISORGANISED; NODULES separated by fibrous bands; alternating necrosis+regeneration (regeneration NOT essential — biliary/haemochromatosis cirrhosis show little).

Pathogenesis

Hepatocellular necrosis + fibrosis + regenerative nodules + vascular reorganisation.

FIBROGENESIS: collapse of parenchyma→fibrosis (portal-central/portal-portal). ↑Type I/III collagen in space of Disse. ITO CELLS→myofibroblasts/fibrocytes. +fibronectin/laminin. Stimulants: PDGF-R, TGF-β, metalloproteinases, cytokines from lymphocytes/Kupffer/endothelial/hepatocytes.

REGENERATIVE NODULES: surviving hepatocytes proliferate, confined within fibrous nodules.

VASCULAR REORGANISATION: new septal vessels connect portal triad→hepatic vein DIRECTLY (bypass parenchyma). Space of Disse fibrosis→CAPILLARISATION of sinusoids.

Morphologic classification (3 types, each active/inactive)

Active=continuing necrosis+inflammation (resembles chronic hepatitis). Inactive=sharp nodules, no inflammation.

  1. MICRONODULAR (<3mm) — diffuse, thick septa. = ALCOHOLIC cirrhosis. Reflects impaired regrowth (alcoholism/malnutrition/anaemia/old age)
  2. MACRONODULAR (>3mm) — irregular, some tracts/veins spared, more regeneration. = POST-NECROTIC cirrhosis
  3. MIXED — both patterns, incomplete micronodular expression

Etiologic ranking

Alcoholic (60-70%, COMMONEST) > post-necrotic (~10%) > biliary (5-10%) > haemochromatosis pigment (~5%) > Wilson’s, α1-AT deficiency, cardiac, ICC, autoimmune, NASH, misc, cryptogenic.

Alcoholic liver disease — 3 stages: steatosis→hepatitis→cirrhosis

Ethanol metabolism: 1g=7cal, NOT storable, obligatory hepatic oxidation. 90%→acetate, 2 steps: (1) ethanol→acetaldehyde via cytosolic ADH(major)+microsomal MEOS+peroxisomal catalase(minor) — acetaldehyde TOXIC, NAD→NADH; (2) mitochondrial ALDH: acetaldehyde→acetate, more NAD→NADH. ↑NADH:NAD ratio = KEY biochemical alteration (measured via lactate-pyruvate ratio).

Risk factors (only 10-15% alcoholics get cirrhosis):

  1. Drinking pattern — chronic excess: fatty liver >90%, hepatitis 10-20%, cirrhosis >10yrs. Threshold: 60-80g/day ×≥10yrs. Quantity+duration matter, NOT beverage type. Intermittent=less harmful
  2. Gender — women more susceptible at LOWER intake (20-40g/day), possibly oestrogen
  3. Malnutrition — contributory, not causative alone (protein-rich diet reverses damage = proof)
  4. Infections — accelerate course
  5. Genetic — ADH/MEOS polymorphism, HLA links (no single gene)
  6. HBV/HCV co-infection — accelerates at LOWER alcohol (20-50g/day), younger, worse, more HCC/cirrhosis, worse survival

Pathogenesis (why some progress unclear; malnutrition-only theory DISCARDED):

  1. Direct hepatotoxicity — ethanol itself→microtubule/mitochondria/membrane damage (8-10 days regular use)
  2. Metabolite hepatotoxicity — acetaldehyde→protein-aldehyde adducts (cytoskeletal/membrane damage) + MAA adducts (autoantibodies+fibrogenesis via PPAR-γ)
  3. Oxidative stress — MEOS→free radicals
  4. Immunologic — impaired cell-mediated immunity, direct attack; explains post-cessation progression + possibly Mallory hyalin
  5. Inflammation — gut damage→endotoxins→TNF-α/IL-1/IL-6/TGF-β→hepatocyte apoptosis
  6. Fibrogenesis — stellate cell activation (damaged hepatocytes+MAA+Kupffer+direct acetaldehyde)
  7. ↑Redox ratio — lactic acidosis, fatty liver, gout, impaired gluconeogenesis
  8. Water/protein retention — ↓protein secretion→swelling→hepatomegaly
  9. Hypoxia — ↑O2 demand→CENTRILOBULAR (zone3) necrosis
  10. ↑Liver fat — dietary/adipose/hepatic synthesis sources

Morphology (3 stages):

  1. STEATOSIS — Gross: enlarged, yellow, greasy, smooth capsule. Micro: microvesicular→MACROVESICULAR fat (nucleus peripheral), fat cysts, ±lipogranulomas
  2. ALCOHOLIC HEPATITIS — acute, post-heavy-drinking. Repeated bouts on fatty liver = near-certain cirrhosis forerunner. Micro: ballooning/necrosis (zone3); MALLORY BODIES/alcoholic hyalin (eosinophilic perinuclear, prekeratin filaments — SUGGESTIVE not specific, also in PBC/ICC/cholestasis/Wilson’s/bypass surgery/FNH/HCC); polymorph infiltrate; PERICELLULAR/PERIVENULAR “chickenwire”/creeping collagenosis fibrosis
  3. CIRRHOSIS — commonest overall (60-70%). AKA Laennec’s/portal/hobnail/nutritional. Gross: starts MICRONODULAR(<3mm), large fatty(>2kg)→shrinks(<1kg), non-fatty, MACRONODULAR over years. Tawny-yellow (Laennec 1818, “kirrhos”=tawny). HOBNAIL LIVER surface. Micro: nodular, effaced architecture; septa delicate→dense/confluent; regenerative nodules, INVERSE fat-vs-fibrosis relationship; Mallory bodies hard to find (late stage); sparse mononuclear infiltrate+bile duct proliferation; ↑haemosiderin (enhanced iron absorption)

Labs: ↑transaminases (AST/SGOT>ALT/SGPT — reverse of most liver disease), ↑γ-GT, ↑ALP, hyperbilirubinaemia, hypoproteinaemia+reversed A:G ratio, ↑PT/PTT, anaemia, neutrophilic leucocytosis (hepatitis/infection).

Post-necrotic cirrhosis

= post-hepatitic/macronodular/coarsely nodular. Large irregular nodules+broad bands, usually POST-VIRAL HEPATITIS.

Etiology: ~25% viral hepatitis Hx, mostly HBV/HCV (HAV does NOT →cirrhosis). ~20% HBV chronic, 20-30% HCV chronic →cirrhosis over 20-30yrs. Also: drugs/toxins (phosphorus/CCl4/mushroom/acetaminophen/methyldopa), infections (brucellosis/clonorchiasis), Wilson’s, advanced alcoholic disease, idiopathic.

Morphology: Gross=SMALL(<1kg), distorted, coarse irregular scars, nodules 3mm-few cm. Micro: bigger nodules than alcoholic, SOME uninvolved tracts/veins survive; thick septa+prominent mononuclear infiltrate(±follicles, esp post-HCV)+extensive ductule proliferation; variable hepatocyte size, multinucleate regenerative nodules.

Clinical: equal sex, YOUNGER age. Prominent splenomegaly/hypersplenism. MORE FREQUENT HCC association than alcoholic, esp. early-life HBV/HCV.

Other named forms

CARDIAC CIRRHOSIS — long-standing severe RHF (cor pulmonale/tricuspid insufficiency/constrictive pericarditis)→↑RV pressure→IVC/hepatic veins. Enlarged tender liver, splenomegaly(passive congestion). Morphology: acute=dilated congested sinusoids+centrilobular haemorrhagic necrosis. Prolonged=fibrous strands from central veins→interconnect→cardiac cirrhosis.

INDIAN CHILDHOOD CIRRHOSIS — 6mo-3yr, rural middle-class Hindu families India/SE Asia/Middle East. NO viral role — toxic+inherited copper metabolism defect (copper vessel-boiled milk). Death within 1yr. Type II(commonest): liver injury(ballooning), prominent Mallory bodies WITHOUT fatty change, neutrophilic infiltrate, creeping fibrosis→micro-macronodular cirrhosis, MORE copper than Wilson’s, IMPAIRED regeneration. Distinguish from Wilson’s disease.

AUTOIMMUNE HEPATITIS CIRRHOSIS — female predominance, ↑AST/ALT, hyperglobulinaemia(IgG/γ-globulin), high ANA/SMA/anti-LKM1, ABSENT antimitochondrial Ab, associated autoimmune disease, HLA DR3/DR4, NO prominent ALP rise. Morphologically = viral chronic hepatitis. Survivors→cirrhosis.

NASH/NAFLD — resembles alcoholic disease, NON-drinkers. Affluent West, obesity/dyslipidaemia/T2DM link. Younger, equal sex, usually asymptomatic. 10-30%→fibrosis/cirrhosis.

MISC: metabolic(galactosaemia, fructose intolerance, glycogen storage), infectious(brucellosis/schistosomiasis/syphilis-hepar lobatum/toxoplasma), GI(IBD/CF/bypass surgery), infiltrative(sarcoidosis).

CRYPTOGENIC — unknown after exclusion.

Non-cirrhotic portal fibrosis (NCPF)

Localised/generalised fibrosis WITHOUT nodular regeneration, no cirrhosis evidence. YOUNGER patients, repeated haematemesis. Japan=idiopathic portal HTN+splenomegaly. India(young males): chronic arsenic exposure, orthodox medicine, umbilical/GI infection→portal thrombophlebitis, familial/HLA-DR3. Morphology: small fibrous liver, standing-out portal tracts(no inflammation), obliterative portovenopathy.

Complications

General: weakness, weight loss, anorexia, muscle wasting, low-grade fever. Complications:

  1. Portal HTN (ascites/splenomegaly/collaterals — see dedicated topic)
  2. Progressive hepatic failure (see dedicated topic)
  3. HCC — MORE in post-necrotic(HBV/HCV) than alcoholic
  4. Chronic relapsing pancreatitis (esp. alcoholic)
  5. Steatorrhoea (↓bile secretion)
  6. Gallstones(pigment) — 2x general population
  7. Infections — impaired RE phagocytosis
  8. Haematologic — bleeding+anaemia
  9. Cardiovascular — ↑atherosclerosis/MI
  10. Musculoskeletal — clubbing, hypertrophic osteoarthropathy, Dupuytren’s
  11. Endocrine — male feminisation; female amenorrhoea
  12. Hepatorenal syndrome (late)

Death causes: hepatic coma, variceal GI haemorrhage, infections, hepatorenal syndrome, HCC.

Clinical relevance

Active/inactive = snapshot-in-time, not permanent status. Fat-vs-fibrosis INVERSE relationship in alcoholic cirrhosis = useful biopsy staging clue (heavy fat+thin septa=earlier; sparse fat+thick septa=advanced). Post-necrotic’s stronger HCC link vs alcoholic = drives more aggressive HBV/HCV-cirrhosis surveillance. ICC vs Wilson’s = classic paired trap — both copper-accumulation, but ICC has MORE copper, LESS regeneration, NO fatty change.

Cirrhosis of the Liver

Overview

Top-10 Western death cause. Irreversible end-stage of diffuse hepatocellular injury. 4 defining features: ENTIRE liver involved; architecture DISORGANISED; NODULES separated by fibrous bands; alternating necrosis+regeneration (regeneration NOT essential — biliary/haemochromatosis cirrhosis show little).

Pathogenesis

Hepatocellular necrosis + fibrosis + regenerative nodules + vascular reorganisation.

FIBROGENESIS: collapse of parenchyma→fibrosis (portal-central/portal-portal). ↑Type I/III collagen in space of Disse. ITO CELLS→myofibroblasts/fibrocytes. +fibronectin/laminin. Stimulants: PDGF-R, TGF-β, metalloproteinases, cytokines from lymphocytes/Kupffer/endothelial/hepatocytes.

REGENERATIVE NODULES: surviving hepatocytes proliferate, confined within fibrous nodules.

VASCULAR REORGANISATION: new septal vessels connect portal triad→hepatic vein DIRECTLY (bypass parenchyma). Space of Disse fibrosis→CAPILLARISATION of sinusoids.

Morphologic classification (3 types, each active/inactive)

Active=continuing necrosis+inflammation (resembles chronic hepatitis). Inactive=sharp nodules, no inflammation.

  1. MICRONODULAR (<3mm) — diffuse, thick septa. = ALCOHOLIC cirrhosis. Reflects impaired regrowth (alcoholism/malnutrition/anaemia/old age)
  2. MACRONODULAR (>3mm) — irregular, some tracts/veins spared, more regeneration. = POST-NECROTIC cirrhosis
  3. MIXED — both patterns, incomplete micronodular expression

Etiologic ranking

Alcoholic (60-70%, COMMONEST) > post-necrotic (~10%) > biliary (5-10%) > haemochromatosis pigment (~5%) > Wilson’s, α1-AT deficiency, cardiac, ICC, autoimmune, NASH, misc, cryptogenic.

Alcoholic liver disease — 3 stages: steatosis→hepatitis→cirrhosis

Ethanol metabolism: 1g=7cal, NOT storable, obligatory hepatic oxidation. 90%→acetate, 2 steps: (1) ethanol→acetaldehyde via cytosolic ADH(major)+microsomal MEOS+peroxisomal catalase(minor) — acetaldehyde TOXIC, NAD→NADH; (2) mitochondrial ALDH: acetaldehyde→acetate, more NAD→NADH. ↑NADH:NAD ratio = KEY biochemical alteration (measured via lactate-pyruvate ratio).

Risk factors (only 10-15% alcoholics get cirrhosis):

  1. Drinking pattern — chronic excess: fatty liver >90%, hepatitis 10-20%, cirrhosis >10yrs. Threshold: 60-80g/day ×≥10yrs. Quantity+duration matter, NOT beverage type. Intermittent=less harmful
  2. Gender — women more susceptible at LOWER intake (20-40g/day), possibly oestrogen
  3. Malnutrition — contributory, not causative alone (protein-rich diet reverses damage = proof)
  4. Infections — accelerate course
  5. Genetic — ADH/MEOS polymorphism, HLA links (no single gene)
  6. HBV/HCV co-infection — accelerates at LOWER alcohol (20-50g/day), younger, worse, more HCC/cirrhosis, worse survival

Pathogenesis (why some progress unclear; malnutrition-only theory DISCARDED):

  1. Direct hepatotoxicity — ethanol itself→microtubule/mitochondria/membrane damage (8-10 days regular use)
  2. Metabolite hepatotoxicity — acetaldehyde→protein-aldehyde adducts (cytoskeletal/membrane damage) + MAA adducts (autoantibodies+fibrogenesis via PPAR-γ)
  3. Oxidative stress — MEOS→free radicals
  4. Immunologic — impaired cell-mediated immunity, direct attack; explains post-cessation progression + possibly Mallory hyalin
  5. Inflammation — gut damage→endotoxins→TNF-α/IL-1/IL-6/TGF-β→hepatocyte apoptosis
  6. Fibrogenesis — stellate cell activation (damaged hepatocytes+MAA+Kupffer+direct acetaldehyde)
  7. ↑Redox ratio — lactic acidosis, fatty liver, gout, impaired gluconeogenesis
  8. Water/protein retention — ↓protein secretion→swelling→hepatomegaly
  9. Hypoxia — ↑O2 demand→CENTRILOBULAR (zone3) necrosis
  10. ↑Liver fat — dietary/adipose/hepatic synthesis sources

Morphology (3 stages):

  1. STEATOSIS — Gross: enlarged, yellow, greasy, smooth capsule. Micro: microvesicular→MACROVESICULAR fat (nucleus peripheral), fat cysts, ±lipogranulomas
  2. ALCOHOLIC HEPATITIS — acute, post-heavy-drinking. Repeated bouts on fatty liver = near-certain cirrhosis forerunner. Micro: ballooning/necrosis (zone3); MALLORY BODIES/alcoholic hyalin (eosinophilic perinuclear, prekeratin filaments — SUGGESTIVE not specific, also in PBC/ICC/cholestasis/Wilson’s/bypass surgery/FNH/HCC); polymorph infiltrate; PERICELLULAR/PERIVENULAR “chickenwire”/creeping collagenosis fibrosis
  3. CIRRHOSIS — commonest overall (60-70%). AKA Laennec’s/portal/hobnail/nutritional. Gross: starts MICRONODULAR(<3mm), large fatty(>2kg)→shrinks(<1kg), non-fatty, MACRONODULAR over years. Tawny-yellow (Laennec 1818, “kirrhos”=tawny). HOBNAIL LIVER surface. Micro: nodular, effaced architecture; septa delicate→dense/confluent; regenerative nodules, INVERSE fat-vs-fibrosis relationship; Mallory bodies hard to find (late stage); sparse mononuclear infiltrate+bile duct proliferation; ↑haemosiderin (enhanced iron absorption)

Labs: ↑transaminases (AST/SGOT>ALT/SGPT — reverse of most liver disease), ↑γ-GT, ↑ALP, hyperbilirubinaemia, hypoproteinaemia+reversed A:G ratio, ↑PT/PTT, anaemia, neutrophilic leucocytosis (hepatitis/infection).

Post-necrotic cirrhosis

= post-hepatitic/macronodular/coarsely nodular. Large irregular nodules+broad bands, usually POST-VIRAL HEPATITIS.

Etiology: ~25% viral hepatitis Hx, mostly HBV/HCV (HAV does NOT →cirrhosis). ~20% HBV chronic, 20-30% HCV chronic →cirrhosis over 20-30yrs. Also: drugs/toxins (phosphorus/CCl4/mushroom/acetaminophen/methyldopa), infections (brucellosis/clonorchiasis), Wilson’s, advanced alcoholic disease, idiopathic.

Morphology: Gross=SMALL(<1kg), distorted, coarse irregular scars, nodules 3mm-few cm. Micro: bigger nodules than alcoholic, SOME uninvolved tracts/veins survive; thick septa+prominent mononuclear infiltrate(±follicles, esp post-HCV)+extensive ductule proliferation; variable hepatocyte size, multinucleate regenerative nodules.

Clinical: equal sex, YOUNGER age. Prominent splenomegaly/hypersplenism. MORE FREQUENT HCC association than alcoholic, esp. early-life HBV/HCV.

Other named forms

CARDIAC CIRRHOSIS — long-standing severe RHF (cor pulmonale/tricuspid insufficiency/constrictive pericarditis)→↑RV pressure→IVC/hepatic veins. Enlarged tender liver, splenomegaly(passive congestion). Morphology: acute=dilated congested sinusoids+centrilobular haemorrhagic necrosis. Prolonged=fibrous strands from central veins→interconnect→cardiac cirrhosis.

INDIAN CHILDHOOD CIRRHOSIS — 6mo-3yr, rural middle-class Hindu families India/SE Asia/Middle East. NO viral role — toxic+inherited copper metabolism defect (copper vessel-boiled milk). Death within 1yr. Type II(commonest): liver injury(ballooning), prominent Mallory bodies WITHOUT fatty change, neutrophilic infiltrate, creeping fibrosis→micro-macronodular cirrhosis, MORE copper than Wilson’s, IMPAIRED regeneration. Distinguish from Wilson’s disease.

AUTOIMMUNE HEPATITIS CIRRHOSIS — female predominance, ↑AST/ALT, hyperglobulinaemia(IgG/γ-globulin), high ANA/SMA/anti-LKM1, ABSENT antimitochondrial Ab, associated autoimmune disease, HLA DR3/DR4, NO prominent ALP rise. Morphologically = viral chronic hepatitis. Survivors→cirrhosis.

NASH/NAFLD — resembles alcoholic disease, NON-drinkers. Affluent West, obesity/dyslipidaemia/T2DM link. Younger, equal sex, usually asymptomatic. 10-30%→fibrosis/cirrhosis.

MISC: metabolic(galactosaemia, fructose intolerance, glycogen storage), infectious(brucellosis/schistosomiasis/syphilis-hepar lobatum/toxoplasma), GI(IBD/CF/bypass surgery), infiltrative(sarcoidosis).

CRYPTOGENIC — unknown after exclusion.

Non-cirrhotic portal fibrosis (NCPF)

Localised/generalised fibrosis WITHOUT nodular regeneration, no cirrhosis evidence. YOUNGER patients, repeated haematemesis. Japan=idiopathic portal HTN+splenomegaly. India(young males): chronic arsenic exposure, orthodox medicine, umbilical/GI infection→portal thrombophlebitis, familial/HLA-DR3. Morphology: small fibrous liver, standing-out portal tracts(no inflammation), obliterative portovenopathy.

Complications

General: weakness, weight loss, anorexia, muscle wasting, low-grade fever. Complications:

  1. Portal HTN (ascites/splenomegaly/collaterals — see dedicated topic)
  2. Progressive hepatic failure (see dedicated topic)
  3. HCC — MORE in post-necrotic(HBV/HCV) than alcoholic
  4. Chronic relapsing pancreatitis (esp. alcoholic)
  5. Steatorrhoea (↓bile secretion)
  6. Gallstones(pigment) — 2x general population
  7. Infections — impaired RE phagocytosis
  8. Haematologic — bleeding+anaemia
  9. Cardiovascular — ↑atherosclerosis/MI
  10. Musculoskeletal — clubbing, hypertrophic osteoarthropathy, Dupuytren’s
  11. Endocrine — male feminisation; female amenorrhoea
  12. Hepatorenal syndrome (late)

Death causes: hepatic coma, variceal GI haemorrhage, infections, hepatorenal syndrome, HCC.

Clinical relevance

Active/inactive = snapshot-in-time, not permanent status. Fat-vs-fibrosis INVERSE relationship in alcoholic cirrhosis = useful biopsy staging clue (heavy fat+thin septa=earlier; sparse fat+thick septa=advanced). Post-necrotic’s stronger HCC link vs alcoholic = drives more aggressive HBV/HCV-cirrhosis surveillance. ICC vs Wilson’s = classic paired trap — both copper-accumulation, but ICC has MORE copper, LESS regeneration, NO fatty change.

Cirrhosis of the Liver

Overview

Cirrhosis is one of the ten leading causes of death in the Western world — the irreversible end-stage of several diffuse hepatocellular-injury diseases. Defined by four features:

  1. Involves the entire liver.
  2. Normal lobular architecture is disorganised.
  3. Nodules form, separated by irregular fibrous bands.
  4. Occurs following hepatocellular necrosis of varying etiology, with alternating necrosis and regenerative nodules — though regenerative nodules are not essential (biliary cirrhosis and haemochromatosis cirrhosis show little regeneration).

Pathogenesis

Regardless of etiology, cirrhosis involves: hepatocellular necrosis, healing by fibrosis, compensatory regenerative nodule formation, and vascular reorganisation.

Fibrogenesis: continued hepatocyte destruction collapses the normal lobular parenchyma, followed by fibrosis around necrotic cells (portal-central, portal-portal, or both). Mechanism: increased type I/III collagen synthesis in the space of Disse; proliferation of fat-storing Ito cells transforming into myofibroblasts/fibrocytes; excess fibronectin and laminin deposition. Stimulants: growth factors (PDGF-receptor, TGF-β, metalloproteinases), vasoactive factors, cytokines/lymphokines/chemokines from lymphocytes, Kupffer cells, endothelial cells, hepatocytes.

Regenerative nodules: surviving hepatocytes proliferate under growth-factor influence, restricted within fibrous nodules.

Vascular reorganisation: new vessels in fibrous septa connect portal-triad vessels directly to the hepatic vein, bypassing hepatic parenchyma; fibrous proliferation in the space of Disse closes sinusoidal gaps, causing capillarisation of sinusoids.

Morphologic Classification

Three types — each can be active (continuing necrosis/inflammation, resembling chronic hepatitis) or inactive (sharply-defined surviving nodules, no significant inflammation):

  1. Micronodular — regular, small nodules (<3 mm); diffuse involvement of all lobules by thick septa (portal-portal, portal-central, or both). Includes alcoholic (nutritional/Laennec’s) cirrhosis — reflects impaired regrowth capacity (alcoholism, malnutrition, severe anaemia, old age).
  2. Macronodular — variable, generally larger nodules (>3 mm); more irregular involvement, some portal tracts/central veins spared, more marked regeneration. Corresponds to post-necrotic (post-hepatitis) cirrhosis.
  3. Mixed — some liver areas micronodular, others macronodular; incomplete expression of the micronodular pattern.

Etiologic Classification (Overview)

Alcoholic cirrhosis (60–70%, commonest) > post-necrotic (~10%) > biliary (5–10%) > pigment cirrhosis of haemochromatosis (~5%), plus Wilson’s disease, α1-antitrypsin deficiency, cardiac cirrhosis, Indian childhood cirrhosis, autoimmune hepatitis cirrhosis, non-alcoholic steatohepatitis, miscellaneous (metabolic/infectious/GI/infiltrative), and cryptogenic cirrhosis (unknown cause after exclusion).

Alcoholic Liver Disease and Cirrhosis

Three sequential stages: alcoholic steatosis (fatty liver) → alcoholic hepatitis → alcoholic cirrhosis.

Ethanol metabolism: 1 g alcohol = 7 calories but cannot be stored — obligatory hepatic oxidation. ~90% oxidised to acetate via a two-step process. Step 1 (ethanol → acetaldehyde): mainly cytosolic alcohol dehydrogenase (ADH), plus microsomal P-450 oxidases (MEOS, smooth ER) and a minor peroxisomal catalase route. Acetaldehyde is toxic (membrane damage, cell necrosis); NAD is reduced to NADH. Step 2 (mitochondria): acetaldehyde → acetate via acetaldehyde dehydrogenase (ALDH); further NAD→NADH reduction. The resulting increased NADH:NAD redox ratio is the basic biochemical alteration of ethanol metabolism (estimated clinically via lactate-pyruvate and β-hydroxybutyrate-acetoacetate ratios).

Risk factors: only 10–15% of alcoholics develop cirrhosis at autopsy.

  1. Drinking pattern — chronic excess leads to fatty liver in >90% of chronic alcoholics, alcoholic hepatitis in 10–20%, cirrhosis after >10 years. Threshold: 60–80 g ethanol/day for ≥10 years. Depends on quantity+duration, not beverage type. Intermittent drinking is less harmful (liver gets recovery time).
  2. Gender — women more susceptible at much lower intake (20–40 g/day), possibly oestrogen-linked.
  3. Malnutrition — contributory (protein/vitamin deficiency); alcohol calories displace nutrients; chronic gastritis/pancreatitis worsen it. Protein-rich diet improves alcoholic cirrhosis clinically/morphologically — evidence for the synergy.
  4. Infections — accelerate disease course; similar lesions can occur post-viral infection in non-alcoholics.
  5. Genetic factors — ethanol metabolism rate is genetically controlled (MEOS/ADH polymorphism); HLA associations exist but no single genotype identified.
  6. HBV/HCV co-infection — accelerates disease at much lower alcohol intake (20–50 g/day), younger onset, greater severity, higher cirrhosis/HCC risk, poorer survival.

Pathogenesis (why some alcoholics progress and others don’t remains unclear; malnutrition-only theory discarded):

  1. Direct hepatotoxicity — ethanol itself, after 8–10 days regular ingestion, is directly toxic to microtubules, mitochondria, hepatocyte membranes → fatty change.
  2. Metabolite hepatotoxicity — chiefly acetaldehyde: forms protein-aldehyde adducts (cytoskeletal/membrane damage, necrosis) and malondialdehyde-acetaldehyde (MAA) adducts (autoantibody formation, fibrogenesis via PPAR-γ).
  3. Oxidative stress — MEOS oxidation generates free radicals damaging membranes/proteins.
  4. Immunologic mechanism — impaired cell-mediated immunity; direct immunologic hepatocyte attack; may explain continued injury after alcohol cessation and possibly Mallory’s hyalin genesis (though cytoskeletal disorganisation is the favoured explanation).
  5. Inflammation — ethanol damages intestinal cells too → endotoxins → proinflammatory cytokines (TNF-α, IL-1, IL-6, TGF-β) → hepatocyte apoptosis/necrosis and inflammation.
  6. Fibrogenesis — stellate cell activation by damaged hepatocytes, MAA adducts, activated Kupffer cells, and direct acetaldehyde stimulation → increased collagen, Ito cell transformation.
  7. Increased redox ratio — ↑NADH:NAD → lactic acidosis; implicated in fatty liver, collagen formation, gout, impaired gluconeogenesis, altered steroid metabolism.
  8. Water/protein retention — alcohol inhibits hepatic protein secretion → protein+water retention → hepatocyte swelling → hepatomegaly.
  9. Hypoxia — increased O₂ demand → centrilobular (zone 3) hypoxic necrosis; redox changes also most marked there.
  10. Increased liver fat — from dietary, adipose mobilisation, or hepatic synthesis sources.

Morphology — three stages:

  1. Alcoholic steatosis (fatty liver) — Gross: enlarged, yellow, greasy, firm, smooth glistening capsule. Micro: initial microvesicular fat droplets → more prominent macrovesicular droplets displacing the nucleus peripherally; fat cysts from coalescence/rupture; occasional lipogranulomas.

  2. Alcoholic hepatitis — develops acutely after heavy drinking; repeated bouts on pre-existing fatty liver are a near-certain forerunner of cirrhosis. Micro:

    • Hepatocellular necrosis — ballooning degeneration/necrosis, especially zone 3.
    • Mallory bodies (alcoholic hyalin) — eosinophilic perinuclear intracytoplasmic inclusions of cytoskeletal intermediate filaments (prekeratin); best seen with Masson’s trichrome/chromophobe aniline blue or immunoperoxidase. Suggestive but not specific — also seen in primary biliary cirrhosis, Indian childhood cirrhosis, cholestatic syndromes, Wilson’s disease, intestinal bypass surgery, focal nodular hyperplasia, hepatocellular carcinoma.
    • Inflammatory infiltrate — mainly polymorphs, some mononuclear cells; more extensive with more necrosis.
    • Fibrosis — pericellular/perivenular, “chickenwire”/“creeping collagenosis” pattern.

  3. Alcoholic cirrhosis — commonest cirrhosis type (60–70% of all cases); also called Laennec’s, portal, hobnail, nutritional, diffuse, or micronodular cirrhosis.

    • Gross: begins micronodular (<3 mm), liver large/fatty (>2 kg); over years shrinks (<1 kg), becomes non-fatty, macronodular (resembling post-necrotic cirrhosis). Tawny-yellow fat content nodules gave Laennec (1818) the term “cirrhosis” (Greek kirrhos = tawny). Diffuse uniform nodularity = hobnail liver.
    • Micro: nodular pattern effacing lobular architecture (central veins hard to find); fibrous septa (initially delicate, central-portal or portal-portal, becoming dense/confluent); surviving hepatocytes form disorganised regenerative nodules — extensive early fatty change that inversely correlates with increasing fibrous scarring; Mallory bodies hard to find in fully-developed cirrhosis; sparse mononuclear infiltrate in septa with some bile duct proliferation; bile stasis and increased haemosiderin (enhanced iron absorption) are also seen.

Laboratory findings: elevated transaminases (AST/SGOT > ALT/SGPT), raised γ-GT, raised alkaline phosphatase, hyperbilirubinaemia, hypoproteinaemia with reversed albumin:globulin ratio, prolonged PT/PTT, anaemia, neutrophilic leucocytosis (alcoholic hepatitis/secondary infection).

Post-Necrotic Cirrhosis

Also called post-hepatitic, macronodular, or coarsely nodular cirrhosis — large irregular nodules with broad connective-tissue bands, most commonly following prior viral hepatitis.

Etiology: ~25% give a history of acute viral hepatitis, most commonly HBV/HCV (HAV does not evolve to cirrhosis) — ~20% of HBV chronic hepatitis and 20–30% of HCV chronic hepatitis progress to cirrhosis over 20–30 years. Also: drug/chemical hepatotoxins (phosphorus, CCl4, mushroom poisoning, acetaminophen, α-methyldopa), other infections/infestations (brucellosis, clonorchiasis), metabolic disease (Wilson’s), advanced alcoholic disease, and idiopathic cases.

Morphology — macronodular type. Gross: small liver (<1 kg), distorted, irregular coarse scars, nodules 3 mm to several cm. Micro: nodular pattern larger than alcoholic cirrhosis, but some uninvolved portal tracts/central veins survive; thick fibrous septa with prominent mononuclear infiltrate (may form follicles, especially post-HCV) and extensive bile ductule proliferation; hepatocytes vary considerably in size, multiple large nuclei common in regenerative nodules; fatty change variable.

Clinical features: equal sex distribution, younger age group; may be asymptomatic or show chronic hepatitis features; splenomegaly/hypersplenism prominent; similar lab pattern to alcoholic cirrhosis. Notably more frequently associated with later hepatocellular carcinoma, especially when related to early-life HBV/HCV infection.

Other Named Forms

Cardiac cirrhosis — uncommon complication of long-standing severe right heart failure (cor pulmonale, tricuspid insufficiency, constrictive pericarditis) — elevated right-ventricular pressure transmits via IVC/hepatic veins. Enlarged tender liver, splenomegaly from passive congestion. Morphology: acute stage — dilated congested sinusoids, centrilobular haemorrhagic necrosis; prolonged failure — delicate fibrous strands radiating from central veins, interconnecting into cardiac cirrhosis with regenerative nodules.

Indian childhood cirrhosis (ICC) — unusual cirrhosis in children 6 months–3 years, rural middle-class Hindu families in India/SE Asia/Middle East. No viral role; combination of toxic effects + inherited copper metabolism abnormality suspected — copper-boiled milk stored in copper vessels is implicated. Death from hepatic failure within a year of diagnosis. Type II (commonest) morphology: liver cell injury (ballooning to significant damage), prominent Mallory bodies without fatty change, neutrophilic ± lymphocytic infiltrate, creeping pericellular fibrosis → fine micro-macronodular cirrhosis, marked hepatocyte copper deposition (often exceeding Wilson’s disease levels) — resembles acute alcoholic hepatitis but without fatty change and with greatly impaired regeneration; must be distinguished from Wilson’s disease.

Cirrhosis in autoimmune hepatitis — autoimmune (“lupoid”) hepatitis with continued injury/inflammation/fibrosis may progress to cirrhosis. Diagnostic criteria: female predominance; predominant AST/ALT elevation; hyperglobulinaemia (IgG, γ-globulin); high ANA/SMA/anti-LKM1 titres with absent antimitochondrial antibodies; associated other autoimmune diseases; HLA DR3/DR4; lack of prominent alkaline phosphatase rise; exclusion of other chronic hepatitis causes. Morphologically indistinguishable from viral chronic hepatitis; survivors of active disease develop cirrhosis.

Non-alcoholic steatohepatitis (NASH/NAFLD) — resembles alcoholic liver disease but in non-drinkers; affluent Western societies, strong association with obesity/dyslipidaemia/type 2 diabetes; younger patients, equal gender prevalence, usually asymptomatic (incidental biochemical diagnosis). A chronic hepatitis form after exclusion of known causes; 10–30% progress to fibrosis/cirrhosis.

Miscellaneous forms: metabolic (galactosaemia, hereditary fructose intolerance, glycogen storage diseases), infectious (brucellosis, schistosomiasis, syphilis/hepar lobatum, toxoplasmosis), GI-associated (IBD, cystic fibrosis, intestinal bypass surgery), infiltrative (sarcoidosis).

Cryptogenic cirrhosis — waste-basket diagnosis once all known etiologies are excluded.

Non-Cirrhotic Portal Fibrosis (NCPF)

Congenital/acquired diseases causing localised/generalised hepatic fibrosis without nodular regeneration and without clinical/functional cirrhosis evidence; patients are relatively young, with repeated haematemesis bouts. Japan’s equivalent is called idiopathic portal hypertension with splenomegaly. Indian type (young males) linked to: chronic arsenic exposure (drinking water), orthodox medicine intake, umbilical/GI infections causing portal thrombophlebitis, familial clustering/HLA-DR3. Morphology: small fibrous liver with prominent septa forming irregular islands; standing-out portal tracts (increased fibrous tissue, no significant inflammation); obliterative sclerosis of portal vein branches (obliterative portovenopathy).

Complications of Cirrhosis

Clinical range spans asymptomatic to progressive liver failure/death; onset is insidious; features are generally more marked in alcoholic cirrhosis. General features: weakness, fatiguability, weight loss, anorexia, muscle wasting, low-grade fever. Advanced complications:

  1. Portal hypertension and its effects (ascites, splenomegaly, collaterals — see the dedicated topic).
  2. Progressive hepatic failure (see the dedicated topic).
  3. Hepatocellular carcinoma — more often in post-necrotic (HBV/HCV) cirrhosis than alcoholic cirrhosis.
  4. Chronic relapsing pancreatitis (especially alcoholic liver disease).
  5. Steatorrhoea (reduced hepatic bile secretion).
  6. Gallstones (pigment type) — twice as frequent as general population.
  7. Infections — more frequent (impaired RE phagocytic activity).
  8. Haematologic derangement — bleeding disorders, anaemia (impaired coagulation factor synthesis, hypoalbuminaemia).
  9. Cardiovascular — more coronary/aortic atherosclerosis and MI.
  10. Musculoskeletal — digital clubbing, hypertrophic osteoarthropathy, Dupuytren’s contracture.
  11. Endocrine — male feminisation (gynaecomastia, pubic hair change, testicular atrophy, impotence); female amenorrhoea.
  12. Hepatorenal syndrome in late stages.

Ultimate causes of death: hepatic coma, massive GI haemorrhage from oesophageal varices, intercurrent infections, hepatorenal syndrome, hepatocellular carcinoma.

Clinical Relevance

  • The active-vs-inactive distinction within each morphologic type is worth remembering as a snapshot-in-time concept — cirrhosis is not static, and a biopsy showing “inactive” disease today does not mean the underlying process has permanently stopped.
  • Fat content inversely tracking fibrous scarring in alcoholic cirrhosis is a genuinely useful staging clue on biopsy — heavy fat with thin septa suggests earlier-stage disease, sparse fat with thick septa suggests more advanced disease.
  • Post-necrotic cirrhosis’s stronger HCC association (versus alcoholic cirrhosis) directly informs surveillance intensity — this is the practical reason HBV/HCV-related cirrhosis patients get more aggressive HCC screening.
  • Indian childhood cirrhosis and Wilson’s disease sharing a copper-accumulation mechanism, but differing in age group, fatty-change presence, and regeneration capacity, is a classic paired-distinction exam trap — anchor the differentiator as “ICC has more copper but less regeneration and no fatty change.”

Cirrhosis of the Liver

Overview

Cirrhosis is one of the ten leading causes of death in the Western world — the irreversible end-stage of several diffuse hepatocellular-injury diseases. Defined by four features:

  1. Involves the entire liver.
  2. Normal lobular architecture is disorganised.
  3. Nodules form, separated by irregular fibrous bands.
  4. Occurs following hepatocellular necrosis of varying etiology, with alternating necrosis and regenerative nodules — though regenerative nodules are not essential (biliary cirrhosis and haemochromatosis cirrhosis show little regeneration).

Pathogenesis

Regardless of etiology, cirrhosis involves: hepatocellular necrosis, healing by fibrosis, compensatory regenerative nodule formation, and vascular reorganisation.

Fibrogenesis: continued hepatocyte destruction collapses the normal lobular parenchyma, followed by fibrosis around necrotic cells (portal-central, portal-portal, or both). Mechanism: increased type I/III collagen synthesis in the space of Disse; proliferation of fat-storing Ito cells transforming into myofibroblasts/fibrocytes; excess fibronectin and laminin deposition. Stimulants: growth factors (PDGF-receptor, TGF-β, metalloproteinases), vasoactive factors, cytokines/lymphokines/chemokines from lymphocytes, Kupffer cells, endothelial cells, hepatocytes.

Regenerative nodules: surviving hepatocytes proliferate under growth-factor influence, restricted within fibrous nodules.

Vascular reorganisation: new vessels in fibrous septa connect portal-triad vessels directly to the hepatic vein, bypassing hepatic parenchyma; fibrous proliferation in the space of Disse closes sinusoidal gaps, causing capillarisation of sinusoids.

Morphologic Classification

Three types — each can be active (continuing necrosis/inflammation, resembling chronic hepatitis) or inactive (sharply-defined surviving nodules, no significant inflammation):

  1. Micronodular — regular, small nodules (<3 mm); diffuse involvement of all lobules by thick septa (portal-portal, portal-central, or both). Includes alcoholic (nutritional/Laennec’s) cirrhosis — reflects impaired regrowth capacity (alcoholism, malnutrition, severe anaemia, old age).
  2. Macronodular — variable, generally larger nodules (>3 mm); more irregular involvement, some portal tracts/central veins spared, more marked regeneration. Corresponds to post-necrotic (post-hepatitis) cirrhosis.
  3. Mixed — some liver areas micronodular, others macronodular; incomplete expression of the micronodular pattern.

Etiologic Classification (Overview)

Alcoholic cirrhosis (60–70%, commonest) > post-necrotic (~10%) > biliary (5–10%) > pigment cirrhosis of haemochromatosis (~5%), plus Wilson’s disease, α1-antitrypsin deficiency, cardiac cirrhosis, Indian childhood cirrhosis, autoimmune hepatitis cirrhosis, non-alcoholic steatohepatitis, miscellaneous (metabolic/infectious/GI/infiltrative), and cryptogenic cirrhosis (unknown cause after exclusion).

Alcoholic Liver Disease and Cirrhosis

Three sequential stages: alcoholic steatosis (fatty liver) → alcoholic hepatitis → alcoholic cirrhosis.

Ethanol metabolism: 1 g alcohol = 7 calories but cannot be stored — obligatory hepatic oxidation. ~90% oxidised to acetate via a two-step process. Step 1 (ethanol → acetaldehyde): mainly cytosolic alcohol dehydrogenase (ADH), plus microsomal P-450 oxidases (MEOS, smooth ER) and a minor peroxisomal catalase route. Acetaldehyde is toxic (membrane damage, cell necrosis); NAD is reduced to NADH. Step 2 (mitochondria): acetaldehyde → acetate via acetaldehyde dehydrogenase (ALDH); further NAD→NADH reduction. The resulting increased NADH:NAD redox ratio is the basic biochemical alteration of ethanol metabolism (estimated clinically via lactate-pyruvate and β-hydroxybutyrate-acetoacetate ratios).

Risk factors: only 10–15% of alcoholics develop cirrhosis at autopsy.

  1. Drinking pattern — chronic excess leads to fatty liver in >90% of chronic alcoholics, alcoholic hepatitis in 10–20%, cirrhosis after >10 years. Threshold: 60–80 g ethanol/day for ≥10 years. Depends on quantity+duration, not beverage type. Intermittent drinking is less harmful (liver gets recovery time).
  2. Gender — women more susceptible at much lower intake (20–40 g/day), possibly oestrogen-linked.
  3. Malnutrition — contributory (protein/vitamin deficiency); alcohol calories displace nutrients; chronic gastritis/pancreatitis worsen it. Protein-rich diet improves alcoholic cirrhosis clinically/morphologically — evidence for the synergy.
  4. Infections — accelerate disease course; similar lesions can occur post-viral infection in non-alcoholics.
  5. Genetic factors — ethanol metabolism rate is genetically controlled (MEOS/ADH polymorphism); HLA associations exist but no single genotype identified.
  6. HBV/HCV co-infection — accelerates disease at much lower alcohol intake (20–50 g/day), younger onset, greater severity, higher cirrhosis/HCC risk, poorer survival.

Pathogenesis (why some alcoholics progress and others don’t remains unclear; malnutrition-only theory discarded):

  1. Direct hepatotoxicity — ethanol itself, after 8–10 days regular ingestion, is directly toxic to microtubules, mitochondria, hepatocyte membranes → fatty change.
  2. Metabolite hepatotoxicity — chiefly acetaldehyde: forms protein-aldehyde adducts (cytoskeletal/membrane damage, necrosis) and malondialdehyde-acetaldehyde (MAA) adducts (autoantibody formation, fibrogenesis via PPAR-γ).
  3. Oxidative stress — MEOS oxidation generates free radicals damaging membranes/proteins.
  4. Immunologic mechanism — impaired cell-mediated immunity; direct immunologic hepatocyte attack; may explain continued injury after alcohol cessation and possibly Mallory’s hyalin genesis (though cytoskeletal disorganisation is the favoured explanation).
  5. Inflammation — ethanol damages intestinal cells too → endotoxins → proinflammatory cytokines (TNF-α, IL-1, IL-6, TGF-β) → hepatocyte apoptosis/necrosis and inflammation.
  6. Fibrogenesis — stellate cell activation by damaged hepatocytes, MAA adducts, activated Kupffer cells, and direct acetaldehyde stimulation → increased collagen, Ito cell transformation.
  7. Increased redox ratio — ↑NADH:NAD → lactic acidosis; implicated in fatty liver, collagen formation, gout, impaired gluconeogenesis, altered steroid metabolism.
  8. Water/protein retention — alcohol inhibits hepatic protein secretion → protein+water retention → hepatocyte swelling → hepatomegaly.
  9. Hypoxia — increased O₂ demand → centrilobular (zone 3) hypoxic necrosis; redox changes also most marked there.
  10. Increased liver fat — from dietary, adipose mobilisation, or hepatic synthesis sources.

Morphology — three stages:

  1. Alcoholic steatosis (fatty liver) — Gross: enlarged, yellow, greasy, firm, smooth glistening capsule. Micro: initial microvesicular fat droplets → more prominent macrovesicular droplets displacing the nucleus peripherally; fat cysts from coalescence/rupture; occasional lipogranulomas.

  2. Alcoholic hepatitis — develops acutely after heavy drinking; repeated bouts on pre-existing fatty liver are a near-certain forerunner of cirrhosis. Micro:

    • Hepatocellular necrosis — ballooning degeneration/necrosis, especially zone 3.
    • Mallory bodies (alcoholic hyalin) — eosinophilic perinuclear intracytoplasmic inclusions of cytoskeletal intermediate filaments (prekeratin); best seen with Masson’s trichrome/chromophobe aniline blue or immunoperoxidase. Suggestive but not specific — also seen in primary biliary cirrhosis, Indian childhood cirrhosis, cholestatic syndromes, Wilson’s disease, intestinal bypass surgery, focal nodular hyperplasia, hepatocellular carcinoma.
    • Inflammatory infiltrate — mainly polymorphs, some mononuclear cells; more extensive with more necrosis.
    • Fibrosis — pericellular/perivenular, “chickenwire”/“creeping collagenosis” pattern.

  3. Alcoholic cirrhosis — commonest cirrhosis type (60–70% of all cases); also called Laennec’s, portal, hobnail, nutritional, diffuse, or micronodular cirrhosis.

    • Gross: begins micronodular (<3 mm), liver large/fatty (>2 kg); over years shrinks (<1 kg), becomes non-fatty, macronodular (resembling post-necrotic cirrhosis). Tawny-yellow fat content nodules gave Laennec (1818) the term “cirrhosis” (Greek kirrhos = tawny). Diffuse uniform nodularity = hobnail liver.
    • Micro: nodular pattern effacing lobular architecture (central veins hard to find); fibrous septa (initially delicate, central-portal or portal-portal, becoming dense/confluent); surviving hepatocytes form disorganised regenerative nodules — extensive early fatty change that inversely correlates with increasing fibrous scarring; Mallory bodies hard to find in fully-developed cirrhosis; sparse mononuclear infiltrate in septa with some bile duct proliferation; bile stasis and increased haemosiderin (enhanced iron absorption) are also seen.

Laboratory findings: elevated transaminases (AST/SGOT > ALT/SGPT), raised γ-GT, raised alkaline phosphatase, hyperbilirubinaemia, hypoproteinaemia with reversed albumin:globulin ratio, prolonged PT/PTT, anaemia, neutrophilic leucocytosis (alcoholic hepatitis/secondary infection).

Post-Necrotic Cirrhosis

Also called post-hepatitic, macronodular, or coarsely nodular cirrhosis — large irregular nodules with broad connective-tissue bands, most commonly following prior viral hepatitis.

Etiology: ~25% give a history of acute viral hepatitis, most commonly HBV/HCV (HAV does not evolve to cirrhosis) — ~20% of HBV chronic hepatitis and 20–30% of HCV chronic hepatitis progress to cirrhosis over 20–30 years. Also: drug/chemical hepatotoxins (phosphorus, CCl4, mushroom poisoning, acetaminophen, α-methyldopa), other infections/infestations (brucellosis, clonorchiasis), metabolic disease (Wilson’s), advanced alcoholic disease, and idiopathic cases.

Morphology — macronodular type. Gross: small liver (<1 kg), distorted, irregular coarse scars, nodules 3 mm to several cm. Micro: nodular pattern larger than alcoholic cirrhosis, but some uninvolved portal tracts/central veins survive; thick fibrous septa with prominent mononuclear infiltrate (may form follicles, especially post-HCV) and extensive bile ductule proliferation; hepatocytes vary considerably in size, multiple large nuclei common in regenerative nodules; fatty change variable.

Clinical features: equal sex distribution, younger age group; may be asymptomatic or show chronic hepatitis features; splenomegaly/hypersplenism prominent; similar lab pattern to alcoholic cirrhosis. Notably more frequently associated with later hepatocellular carcinoma, especially when related to early-life HBV/HCV infection.

Other Named Forms

Cardiac cirrhosis — uncommon complication of long-standing severe right heart failure (cor pulmonale, tricuspid insufficiency, constrictive pericarditis) — elevated right-ventricular pressure transmits via IVC/hepatic veins. Enlarged tender liver, splenomegaly from passive congestion. Morphology: acute stage — dilated congested sinusoids, centrilobular haemorrhagic necrosis; prolonged failure — delicate fibrous strands radiating from central veins, interconnecting into cardiac cirrhosis with regenerative nodules.

Indian childhood cirrhosis (ICC) — unusual cirrhosis in children 6 months–3 years, rural middle-class Hindu families in India/SE Asia/Middle East. No viral role; combination of toxic effects + inherited copper metabolism abnormality suspected — copper-boiled milk stored in copper vessels is implicated. Death from hepatic failure within a year of diagnosis. Type II (commonest) morphology: liver cell injury (ballooning to significant damage), prominent Mallory bodies without fatty change, neutrophilic ± lymphocytic infiltrate, creeping pericellular fibrosis → fine micro-macronodular cirrhosis, marked hepatocyte copper deposition (often exceeding Wilson’s disease levels) — resembles acute alcoholic hepatitis but without fatty change and with greatly impaired regeneration; must be distinguished from Wilson’s disease.

Cirrhosis in autoimmune hepatitis — autoimmune (“lupoid”) hepatitis with continued injury/inflammation/fibrosis may progress to cirrhosis. Diagnostic criteria: female predominance; predominant AST/ALT elevation; hyperglobulinaemia (IgG, γ-globulin); high ANA/SMA/anti-LKM1 titres with absent antimitochondrial antibodies; associated other autoimmune diseases; HLA DR3/DR4; lack of prominent alkaline phosphatase rise; exclusion of other chronic hepatitis causes. Morphologically indistinguishable from viral chronic hepatitis; survivors of active disease develop cirrhosis.

Non-alcoholic steatohepatitis (NASH/NAFLD) — resembles alcoholic liver disease but in non-drinkers; affluent Western societies, strong association with obesity/dyslipidaemia/type 2 diabetes; younger patients, equal gender prevalence, usually asymptomatic (incidental biochemical diagnosis). A chronic hepatitis form after exclusion of known causes; 10–30% progress to fibrosis/cirrhosis.

Miscellaneous forms: metabolic (galactosaemia, hereditary fructose intolerance, glycogen storage diseases), infectious (brucellosis, schistosomiasis, syphilis/hepar lobatum, toxoplasmosis), GI-associated (IBD, cystic fibrosis, intestinal bypass surgery), infiltrative (sarcoidosis).

Cryptogenic cirrhosis — waste-basket diagnosis once all known etiologies are excluded.

Non-Cirrhotic Portal Fibrosis (NCPF)

Congenital/acquired diseases causing localised/generalised hepatic fibrosis without nodular regeneration and without clinical/functional cirrhosis evidence; patients are relatively young, with repeated haematemesis bouts. Japan’s equivalent is called idiopathic portal hypertension with splenomegaly. Indian type (young males) linked to: chronic arsenic exposure (drinking water), orthodox medicine intake, umbilical/GI infections causing portal thrombophlebitis, familial clustering/HLA-DR3. Morphology: small fibrous liver with prominent septa forming irregular islands; standing-out portal tracts (increased fibrous tissue, no significant inflammation); obliterative sclerosis of portal vein branches (obliterative portovenopathy).

Complications of Cirrhosis

Clinical range spans asymptomatic to progressive liver failure/death; onset is insidious; features are generally more marked in alcoholic cirrhosis. General features: weakness, fatiguability, weight loss, anorexia, muscle wasting, low-grade fever. Advanced complications:

  1. Portal hypertension and its effects (ascites, splenomegaly, collaterals — see the dedicated topic).
  2. Progressive hepatic failure (see the dedicated topic).
  3. Hepatocellular carcinoma — more often in post-necrotic (HBV/HCV) cirrhosis than alcoholic cirrhosis.
  4. Chronic relapsing pancreatitis (especially alcoholic liver disease).
  5. Steatorrhoea (reduced hepatic bile secretion).
  6. Gallstones (pigment type) — twice as frequent as general population.
  7. Infections — more frequent (impaired RE phagocytic activity).
  8. Haematologic derangement — bleeding disorders, anaemia (impaired coagulation factor synthesis, hypoalbuminaemia).
  9. Cardiovascular — more coronary/aortic atherosclerosis and MI.
  10. Musculoskeletal — digital clubbing, hypertrophic osteoarthropathy, Dupuytren’s contracture.
  11. Endocrine — male feminisation (gynaecomastia, pubic hair change, testicular atrophy, impotence); female amenorrhoea.
  12. Hepatorenal syndrome in late stages.

Ultimate causes of death: hepatic coma, massive GI haemorrhage from oesophageal varices, intercurrent infections, hepatorenal syndrome, hepatocellular carcinoma.

Clinical Relevance

  • The active-vs-inactive distinction within each morphologic type is worth remembering as a snapshot-in-time concept — cirrhosis is not static, and a biopsy showing “inactive” disease today does not mean the underlying process has permanently stopped.
  • Fat content inversely tracking fibrous scarring in alcoholic cirrhosis is a genuinely useful staging clue on biopsy — heavy fat with thin septa suggests earlier-stage disease, sparse fat with thick septa suggests more advanced disease.
  • Post-necrotic cirrhosis’s stronger HCC association (versus alcoholic cirrhosis) directly informs surveillance intensity — this is the practical reason HBV/HCV-related cirrhosis patients get more aggressive HCC screening.
  • Indian childhood cirrhosis and Wilson’s disease sharing a copper-accumulation mechanism, but differing in age group, fatty-change presence, and regeneration capacity, is a classic paired-distinction exam trap — anchor the differentiator as “ICC has more copper but less regeneration and no fatty change.”

Cirrhosis of the Liver

  • Ethanol metabolism two-step pathway (ADH/MEOS → acetaldehyde → ALDH → acetate) with the NADH:NAD redox shift marked
  • Alcoholic liver disease’s three sequential stages (steatosis → hepatitis → cirrhosis) as a progression timeline with the fat-vs-fibrosis inverse relationship noted
  • Alcoholic (micronodular) vs post-necrotic (macronodular) cirrhosis gross appearance side by side

Cirrhosis of the Liver

  • Ethanol metabolism two-step pathway (ADH/MEOS → acetaldehyde → ALDH → acetate) with the NADH:NAD redox shift marked
  • Alcoholic liver disease’s three sequential stages (steatosis → hepatitis → cirrhosis) as a progression timeline with the fat-vs-fibrosis inverse relationship noted
  • Alcoholic (micronodular) vs post-necrotic (macronodular) cirrhosis gross appearance side by side
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