A Rare Case of Hamartoma of Duodenal Papilla

Kunihiro Yamasawa, Seiji Yano, Makoto Koike, Tomoko Itagaki, Yoshinori Kitamura, Koji Hashimoto, Masayuki Itakura, Yoshinori Nio, Tetsuya Higami and Riruke Maruyama*

First Department of Surgery and Pathology*, Shimane Medical University

A 69 year-old man underwent a gastrointestinal endoscopic examination (GIEE) one year ago from which the only abnormal finding was swelling of the duodenal papilla. However, a current GIEE showed swelling and redness of the duodenal papilla. A biopsy was performed, and the histological examination indicated a suspected well differentiated adenocarcinoma. Endoscopic ultrasonography showed that the tumor occupied only the mucosal layer. Endoscopic retrograde cholangiopancreatography revealed that the tumor had invaded neither the pancreatic duct nor the bile duct. Therefore, an operative papillectomy was undertaken and the tumor at the duodenal papilla was completely resected. The final histopathological diagnosis was myoepithelial hamartoma.
Hamartoma of duodenal papilla is a very rare case, which has been reported in 2 cases including ours in the Japanese literature. It is considered that tumors of the duodenal papilla will rarely include hamartoma.

Key words
hamartoma, duodenal papilla, papillectomy

Reprint requests
Kunihiro Yamasawa First Department of Surgery, Shimane Medical University
89-1 Enya-cho, Izumo, 693-8501 JAPAN

Accepted
June 25, 2003

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