胃间质瘤(gastricstromaltumor,GST)过去一直被诊断为胃平滑肌瘤或者神经源性肿瘤,近年来,由于免疫组织化学、电镜及分子生物学技术的发展,已证实为一种独立起源于胃肠道原始间叶组织的非定向分化的肿瘤,属于消化道间叶性肿瘤。消化道间叶细胞(mesenchyrealcell)有多向分化能力,包括进一步分化为纤维母细胞、肌纤维母细胞、脂 Gastrointestinal stromal tumors (GST) have been diagnosed with gastric leiomyoma or neurogenic tumors in the past. In recent years, due to the development of immunohistochemistry, electron microscopy and molecular biology techniques, gastritis stromal tumor (GST) Non-directional differentiation of intestinal primitive mesenchymal tumor, belonging to gastrointestinal mesenchymal tumor. The mesenchymacell is a multi-directional differentiating cell that further differentiates into fibroblasts, myofibroblasts, lipids