1. leiomyoma, epithelioid A relatively rare smoothmuscletumorfound most frequently in the wall of the gastrointestinal tract, especially in the stomach. It is similar to other smoothmuscle tumors but may become very large and hemorrhage and exhibitsmall cystic areas. Simpleexcision is almost always curative. (From Dorland, 27th ed; DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1354)