<prompt> 25M presented with jaundice, clay coloured stool and pruritus. Bilirubin was 7gm, Direct Bilirubin 5gm, ALP 500 IUL. Biopsy from biliary tract revealed the following. What is your diagnosis?PSCSBCPBCBile duct stones  <response>: Ans. a PSC Clinical feature of jaundice, clay coloured stool and pruritus is suggestive of obstructive jaundice. Biopsy showing fibrotic obliteration of bile ducts onionskin fibrosis seen in primary biliary cirrhosis. 