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我们对49例消化道平滑肌源性肿瘤（ASMT）进行了回顾性研究，并对其中23例进行免疫组化增殖细胞核抗原（PCNA）检测，旨在结合组织学观察、临床资料，探讨良、恶性ASMT的诊断标准。1材料与方法材料：收取1975至1995年经病理确诊ASMT的病例49例，男性31例，女性18例。年龄23～68
We retrospectively studied 49 cases of digestive tract smooth muscle-derived tumors (ASMT) and performed immunohistochemical detection of proliferating cell nuclear antigen (PCNA) in 23 cases. The aim was to combine histological observations and clinical data to investigate benign and malignant ASMT diagnostic criteria. 1Materials and Methods Materials: A total of 49 cases of ASMT diagnosed by pathology from 1975 to 1995 were collected, including 31 males and 18 females. Age 23-68