Superficial Esophageal Cancer Coexisting just on the Esophageal Granular Cell Tumor

Satoru Matono, Toshiaki Tanaka, Yuichi Tanaka, Kohei Nishimura, Kazutaka Murata, Hiroko Sasahara*, Susumu Sueyoshi*, Kazuo Shirouzu and Hiromasa Fujita

Department of Surgery, Kurume University School of Medicine
Department of Surgery, Omuta City General Hospital*

We report the case of minute superficial esophageal cancer coexisting on a granular cell tumor in the esophagus. A 50-year-old man referred for superficial esophageal cancer of lower esophagus was found in endoscopy to have a round protruding lesion 12 mm in diameter having a slightly rough surface not stained by Lugol solution. Biopsy specimens pathologically indicated well-differentiated squamous cell carcinoma. Endoscopic ultrasonography showed an isoechoic mass in the submucosal layer, diagnosed as esophageal cancer cStage I (T1bN0M0) and necessitating chemoradiotherapy. Although the unstained lesion disappeared after chemoradiotherapy, the submucosal tumor-like lesion remained, and was resected endoscopically. Pathologically, it was diagnosed as a granular cell tumor. The definitive diagnosis was superficial esophageal cancer coexisting on a granular cell tumor.

Key words
superficial esophageal cancer, esophageal granular cell tumor

Reprint requests
Satoru Matono Department of Surgery, Kurume University School of Medicine
67 Asahimachi, Kurume, 830-0011 JAPAN

Accepted
April 22, 2009

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