<prompt> Mirrizi syndrome -Cyst present in CBDStone in cystic duct compressing CBDObstruction of pancreatic ductStone in Rt hepatic duct  <response>: Ans. is b i.e., Stone in cystic duct compressing CBD Mirizzi syndromeo It comprises obstructive jaundice due to stone impacted in the neck of gall bladder, which compresses the common hepatic duct and eventually ulcerates into common hepatic duct causing cholecysto-choledochal fistula fistula BW gall bladder common hepatic duct. 