A Case of Early Cancer in the Gastric Duplication Cyst

Yuichiro Kawamura, Katsuhiko Inoue, Tomofumi Osako, Takeshi Taneda, Norihisa Hanada, Kenji Okamura and Shouhei Shimajiri*

Department of Surgery and Department of Surgical Pathology*, Labor Welfare Corporation Kumamoto Rosai Hospital

A 64-year-old man found in gastroscopy to have a submucosal gastric lesion 2 cm in diameter was found in enhanced computed tomography (CT) to have a cystic tumor in the gastric wall. We conducted tumor resection under laparotomy. Histological findings showed gastric mucosa in the internal mucosa of the cyst, and 2 mucosal layers were divided from each other by 2 muscularis mucosa layers. In one part of the internal mucosal layer, adenocarcinoma had arisen, but had not invaded the outer layer, so we diagnosed the man as having early gastric cancer arising in the gastric duplication cyst. Such malignant changes thus should be considered in the diagnosis of cystic gastric lesions.

Key words
alimentary duplication cyst, gastric cancer, submucosal cystic tumor

Reprint requests
Yuichirou Kawamura Department of Surgery, Labor Welfare Corporation Kumamoto Rosai Hospital
1670 Takeharamachi, Yatsushiro, 866-8533 JAPAN

Accepted
April 27, 2005

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