Cellular leiomyomas of the stomach in 49 patients.

摘要: The cellular leiomyoma of the stomach is composed tightly packed, generally uniform spindle cells arranged in palisades, whorls, or interdigitations. Although these neoplasms have been variably considered to arise from gastric smooth muscle Schwann cells, morphogenesis incompletely resolved. Perhaps they derive a multipotential stromal stem cell that capable differentiating toward muscle. A tumor fairly uniform, elongated unlikely be malignant. Of 49 such tumors, only one metastasized. combination an increased mitotic rate and large size possibly indicative malignant potential.