Concurrent mucinous cystadenoma of the liver and bile duct: a rare cause of jaundice

not have any known predisposing factors such as NSAIDintake and helicobacter pylori infection. The presence ofthrombi in the small- and medium-sized vessels surround-ing the necrotic ulcer on histologic examination suggestedPAN.ThepresenceofmicroaneurysmsinbothrenalarteriesonMRangiographycorroboratedthisevidence.Itisdifficultto come to a diagnosis preoperatively because it is notacommoncauseofupperGIbleeding.Itshouldbeconsid-ered in the differential diagnosis in patients with massiveupper GI bleeding, with endoscopy showing giant ulcers.