A PATIENT WITH EARLY GALLBLADDER CANCER DERIVED FROM A ROKITANSKI-ASCHOFF SINUS

We present herein a case of a 40-year-old male with early gallbladder cancer derived from a Rokitanski-Aschoff sinus (RAS). The patient orig inally presented at our hospital with epigastric discomfort, following which a diagnosis of adenomyomatosis (ADM) of the gallbladder was mad e, and a cholecystectomy performed. Histopathological examination of t he resected specimen revealed a 7-mm well-differentiated papillo-tubul ar adenocarcinoma in the RAS epithelium in the body of the gallbladder . The RAS extended to the ''pm'' layer but the adenocarcinoma was an i n situ lesion localized within the RAS epithelium. Considering the dif ficulties in making an early diagnosis of gallbladder cancer, active s urgery should be performed for patients in whom ADM is seen in the gal lbladder.