Courvoisier phenomenon

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Courvoisier phenomenon

(Science: radiology) in the presence of jaundice: small gall Bladder most likely to be cholecystitis / impacted stone (gall Bladder chronically inflamed, scarred), large gall Bladder most likely to be neoplasm (gall Bladder intrinsically normal, can dilate), pancreatic head, cholangiocarcinoma (distal common bile duct), ampulla of vater, duodenal papilla