Abstract
We present a case of carcinoma in adenoma of the gallbladder with anomalous pancreaticobiliary ductal junction (APBDJ) in a 60-year-old Japanese woman. The patient had no abdominal symptoms. Serum levels of carcinoembryonic antigen, carbohydrate antigen 19-9, elastase 1, and α-fetoprotein were all within normal limits. Ultrasonography demonstrated two irregular hyperechoic lesions of the gallbladder. Computed tomography showed two soft-tissue density masses in the gallbladder. Endoscopic retrograde cholangiopancreatography showed APBDJ and two protruding lesions in the gallbladder. Angiography displayed a hypervascular lesion fed by the cystic artery. The patient underwent total cholecystectomy; the diagnosis of the intraoperative frozen section was well differentiated adenocarcinoma with possible mucosal invasion. Amylase level in the gallbladder bile was 90600 IU/l. Macroscopically, there were two polyps in the gallbladder. The larger one, 3.5 cm in diameter, was adenocarcinoma in adenoma, and the smaller one, an inflammatory polyp. We briefly discuss the relationship among adenoma, adenocarcinoma of the gallbladder, and APBDJ.
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