<prompt> All are metabolic causes of liver disease exceptHistiocytosisHemochromatosisGauchers diseaseWilson disease  <response>: Ans. is a i.e., HistiocytosisMetabolic liver diseases can be classified into 3 categories:Manifestations due to hepatocellular necrosis: Galactosemia, hereditary fructose intolerance, tyrosinemia type I, Wilson disease, Hemochromatosis and al -antitrypsin deficiency.Cholestatic jaundice :Al -antitrypsin deficiency, Bylers disease, cystic fibrosis, Niemann-Pick disease and some disorders of peroxisome biogenesis.Hepatomegaly disorders with liver damage storage diseases : Glycogen storage diseases, cholesteryl ester storage disease and, when associated with splenomegaly, lysosomal storage diseases eg:- Gaucher disease. 