A gallstone gets impacted most commonly in which pa of common bile duct
Most gallstones pass out of body unnoticed, but some become lodged in the common bile duct, causing jaundice A frequent site of gallstone impaction is the ampulla of vater, where common channel meets the small intestine Blockage of the common channel by a gallstone can induce acute pancreatitis Ref: Internet sources
Supra duodenal
Retro duodenal
Ampulla of vater
Common hepatic duct
G.I.T