Korean J Gastrointest Endosc > Volume 41(2); 2010 > Article
Korean Journal of Gastrointestinal Endoscopy 2010;41(2): 118-122.
반유경성 용종 형태를 보인 직장 평활근육종 1예
인제대학교 의과대학 부산백병원 내과학교실
A Case of Rectal Leiomyosarcoma Presenting as a Semipedunculated Polypoid Mass
Sang Heon Lee, M.D., Ji Hyun Kim, M.D., Jeong Ah Seo, M.D., Sung Soo Moon, M.D., Hyoun Gu Kang, M.D. and Sang Young Seol, M.D.
Department of Internal Medicine, Pusan Paik Hospital, Inje University College of Medicine, Busan, Korea
Rectal leiomyosarcoma is an extremely rare disease. Anal bleeding, rectal pain and a sensation of pressure in the anus are the most common symptoms. It tends to form a polypoid intraluminal mass and commonly originates from the muscularis propria, but may arise from the muscularis mucosa, or in the walls of the blood vessels. Characteristically, leiomyosarcoma has very high mitotic activity and is, on immunohistochemical staining, positive for actin and desmin, but negative for c-kit and S-100. We experienced a case of a rectal leiomyosarcoma in a 54 year-old man who presented with anal bleeding. Colonoscopic examination revealed a 4.5 cm-sized semipedunculated polypoid mass at mid-rectum. We confirmed that it was a leiomyosarcoma histologically by endoscopic resection with mechanical snaring. Low anterior resection followed by radiation therapy was performed. We report here on this case with a review of the relevant literature. (Korean J Gastrointest Endosc 2010;41:118-122)
Key Words: Rectal leiomyosarcoma, Rectal tumor, Low anterior resection, Radiation therapy
주요어: 직장 평활근육종, 직장 종양, 저위 전방 절제술, 방사선 치료
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