这是近十多年来提出的一种肿瘤命名,主要发生在胃肠道,也可见于网膜、肠系膜和腹膜后。广义上讲,它是指胃肠道除上皮性肿瘤以外的一组梭形或上皮样肿瘤,以往多诊断为平滑肌瘤,少数诊断为神经纤维瘤或神经鞘瘤。最近,由于新技术的应用,发现多数肿瘤,并无平滑肌或神经的特征性分化,因此将它命名为间质瘤。随着时间的推移,研究不断深入,发现胃肠道间质瘤,部分细胞表达肌源性,部分细胞 This is a tumor name proposed in the past decade or so, mainly in the gastrointestinal tract, can also be found in the omentum, mesentery and retroperitoneal. Broadly speaking, it refers to a group of fusiform or epithelioid tumors other than epithelial tumors of the gastrointestinal tract. In the past, many were diagnosed as leiomyomas, and a few were diagnosed as neurofibromatosis or schwannoma. Recently, due to the application of new technologies, most tumors were found without the characteristic differentiation of smooth muscle or nerves, so it was named as stromal tumor. With the passage of time, the research continues to deepen, found that gastrointestinal stromal tumors, some cells express myogenic, some cells