Most likely diagnosis will be Pancreatic head carcinoma
Because a positive courvoisier sign - palbable , non - tender , enlarged fall bladder with painless jaundice - suggest a obstruction to bile duct mostly due to a gradual pressure build from a tumour
Incase of acute cholecystitis -obstruction to cystic duct mostly due to gall stones and the patient presents with severe abdominal pain - Murphy’s sign positive - which is not indicated in this patient condition
Chronic hepatitis - may some time cause gall stones induced gall bladder disease - cholecystitis,but patient will present with abdominal pain and Murphy sign positive
Gilbert syndeome- an autosomal recessive disease of liver ,in which the patient presents with increased levels of indirect bilirubin ( unconjugated hyperbilurubinemia)