대한대장항문학회

Leiomyosarcoma is the most commonly nonepithelial gastrointestinal malignancy. It<br>may arise from the smooth muscle of the muscularis propria, muscularis mucosa, or<br>blood vessels. This malignant tumor is most common seen in the fifth and sixth<br>decades, although it may occur in infants and children. Leiomyosarcoma of the large<br>intestine are unusual neoplasms, comprising less than 0.1% of all malignancies of the<br>colon and rectum. Leiomyosarcomas in gastrointestinal tract are mostly found 61% in<br>the stomach, 24% in the small bowel, 7% in the rectum, and only 3% in the colon. The<br>survival rates and therapeutic approaches to gastrointestinal leiomyosarcoma vary widely.<br>We experienced a case of recurred rectal leiomyosarcoma in the abdominal wall and<br>report with review of literatures.<br>