1990 Volume 23 Issue 3 Pages 762-766
We report a case of heterotopic gastric mucosa in the gallbladder which was diagnosed accidentally by abdominal ultrasonography. The patient was a 44-year-old male who had no symptoms. Ultrasonography revealed a high-echoic polyp with a size of 10.4 mm and the shape of YAMADA-III type at the body of the gallbladder. Endoscopic retrograde cholangiography revealed a polypoid lesion. Considering the possibility of a malignant polyp, cholecystectomy was performed, but malignancy was not found by frozen section pathological examination. Postoperative pathological examination of the polyp showed a gastric fundal-type mucosa which was located at the mucosal layer of the gallbladder. This case is the 7th case of heterotopic gastric mucosa in the gallbladder in the Japanese literature. Heterotopic gastric mucosa is a rare disease and it is too difficult to diagnose it preoperatively, but its detection will be increased by development of imaging examinations.
