A Case Report of Mucinous Cystadenoma of the Gallbladder

Abstract

A 77-year-old man complaining of abdominal pain was diagnosed with gallstone attack elsewhere and was referred to our hospital for the purpose of surgery. Contrast-enhanced CT and contrast-enhanced MRI scans revealed a calculus of 25 mm in size in the neck of the gallbladder, thickening of the wall confined to the bottom of the gallbladder, and aggregation of multilocular microcysts in the wall of the gallbladder. Laparoscopic cholecystectomy was performed under the diagnosis of cholelithiasis and gallbladder adenomyosis. Histopathological examination revealed the lesion at the bottom of the gallbladder to be mucinous cystadenoma. Although it is difficult to make a definitive diagnosis of this disease by image diagnosis alone, it should be considered as a possible differential diagnosis when multilocular cystic lesions are found in the gallbladder. Since there are reports of malignant transformation and jaundice symptoms due to intra-biliary progression, resection is considered necessary if this disease is suspected.