平滑肌母细胞瘤或称上皮样平滑肌瘤或称奇异平滑肌瘤,是平滑肌肿瘤的特殊类型。多见于胃肠道,也可见于子官、女阴,少数发生于浅部和深部组织(包括系膜、腹膜后、大网膜、纵膈等),即凡是有平滑肌分布之处均可有发生。本病大多数见于成年人,以中年人为多。本病多为良性,少数为 Smooth muscle cell tumor or called leiomyoma or singular leiomyoma, is a special type of smooth muscle tumors. More common in the gastrointestinal tract, can also be found in sub-officer, female vagina, a few occurred in the shallow and deep tissues (including mesangial, retroperitoneal, omentum, mediastinal, etc.), that is, where there are smooth muscle distribution may have occur. Most of the disease seen in adults, mostly middle-aged people. The disease is mostly benign, a few