Gallbladder Carcinoma with Heterotopic Bone Formation -A case Report-

Noriaki Sagawa, Eiichi Tanaka, Mitsuhiro Tomiyama, Hiroyuki Kato*

Departmant of Surgery, Kiyota Hospital
*Second Department of Surgery, Hokkaido University

A 63-year-old man with a history of gallbladder stones was admitted to our hospital with a complaint of right hypochondrial pain. Abdominal computed tomography and endoscopic retrograde cholangiography showed chronic cholecystitis with gallbladder stones. Open cholecystectomy was performed. A necrotic mucosa was found in the resected gallbladder. Histologically, the gallbladder showed welldifferentiated papillary adenocarcinoma including mucinous adenocarcinoma and there was bone formation in the mucinous component. A gallbladder with heterotopic bone formation is very rare, only 4 cases could be found in the literature.

Key words
gallbladder carcinoma, heterotopic bone formation

Reprint requests
Noriaki Sagawa Department of Surgery, Kiyota Hospital
1-1 Sinei, Toyohiraku, Sapporo, 004 JAPAN

Accepted
March 19, 1997

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