<prompt> Old male with features of jaundice, pale stools, dark urine and mass in the epigastric region. Which of the following diagnosis in unlikely?Pancreatic cancerBiliary cancerPeriampullary cancerChronic cholecystitis  <response>: Ans. d Chronic cholecystitisRef: Long cases Surgery RRM From the given details its clear the patient is obeying Courvoisier law- Jaundice GB palpable. So he is a case of cancer- Possible options include distal CBD, Periampullary or pancreatic head cancers with Obstruction of CBD 