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胃肠道间质瘤确定为消化道肿瘤已十余年，以往由于对其认识不足，病理上多被误认为是平滑肌源性或神经源性肿瘤。近年来由于免疫组化，电镜技术的应用，对其有所认识，然临床对其认识尚属初步。我院自1996年12月以来半年内发现4例上消化道间质瘤患者。1临床资料例1张某，男性，
Gastrointestinal stromal tumors have been identified as digestive tract tumors for more than ten years. In the past, due to their lack of awareness, pathologies were mostly mistaken for smooth muscle-derived or neurogenic tumors. In recent years, due to the application of immunohistochemistry and electron microscopy, it has been recognized. However, its clinical understanding is still preliminary. Four cases of patients with upper gastrointestinal stromal tumors were found in our hospital within six months since December 1996. 1 clinical data example 1 Zhang, male,