A CASE OF HEPATOBILIARY CYSTADENOMA RESECTED BY LAPAROSCOPIC SURGERY

Abstract

A-58-year-old woman was admitted to the hospital because of right lower abdominal pain in May, 2006. Abdominal ultrasonography, CT scan and DIC-CT scan revealed a unilocular cystic tumor 7 cm in size derived from liver (Segment 6). The tumor was constructed by thin wall and had no protruding lesion in the inner wall. We considered that the tumor was a liver cyst or hepatobiliary cystadenoma and performed a complete resection by laparoscopic surgery. The resected specimen had the thin wall, however, on histological examination, the wall consisted of cylindrical epithelium. Therefore, we finally diagnosed the cystic tumors as hepatobiliary cystadenoma ; they were benign cystic tumors having potential malignancy, so a complete resection was required. The indication of laparoscopic surgery for hepatobiliary cystadenoma must be circumspect, because laparoscopic surgery carried with it the possibility of rupture of the cystic wall. The current case, however, had good indication for laparoscopic resection, because the tumor was mainly located in the extrahepatic portion and the size was comparatively small.