Abstract
A 63-year-old Japanese female v as admitted to our hospital because of a thoroughexamination of chronic hepatitis. Abdominal US revealed the liver with dull edge andirreglar surface, but no findings suggestive of turner of the gallbladder. Laparoscopy disclosed an enlarged lesion which was clearly demarcated, 2cm in size, on the fundus of the gallbladder. Computed tomography revealed an elevated lesion of the gallbladder which had some low density areas. ERCP revealed a filling defect in the gallbladder. From these findings, a diagnosis of adenomyomatosis was made. But, she had elevated serum CA19-9 on admission. As carcinoma of the gallbladder in adenomyomatosis was suspected, cholecystectomy was done. Histology of the resected gallbladder showed adenomyoma-taxis and no evidence of malignancy. This is a rate case of adenomyomatosis which was detected by lapascopy.