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과립세포종은 양성 종양으로 피부, 구강, 유방 등에서는 흔하지만, 식도에서는 드물게 발생한다. 저자들은 식후 상복부 불편감으로 위내시경 검사를 받은 후 식도의 점막하종양을 발견하고 내원한 44세 남자에서, ‘O’형 밴드 결찰술을 이용한 용종절제술을 시행하고 조직학적으로 과립세포종으로 확진하였기에 국내의 문헌고찰을 중심으로 보고한다.


Granular cell tumor is a benign tumor, commonly found in the skin, tongue, and breast but rarely in the esophagus. A 44-year-old man was referred from the private clinic because of an esophageal lesion found on endoscopy. Esophagoscopy revealed a white-yellowish polypoid lesion covered with normal looking mucosa in the upper esophagus. It was movable within the wall by pushing with forceps. Endoscopic polypectomy after ligation with elastic "O" band was performed without complication. Histologic diagnosis of granular cell tumor was made. It was stained strongly positive for S-100 protein. Another 20 cases of esophageal granular cell tumors reported in Korean literature were reviewed. (Korean J Gastrointest Endosc 2003;26:84-89)