血管周上皮样细胞肿瘤(PEComa)是一组具有明确特征的间质肿瘤,多发生在腹膜后、内脏器官和腹腔骨盆部位,常表现为黑色素细胞和平滑肌标记的表达。胃肠道PEComa有不足20例的文献报道,其生物学行为和恶性标准尚未完全确定。本文检测一组胃肠道PEComa的临床病理特征,进一步评估其相关预后参数。作者回顾性分析来自会诊和外 PEComa is a group of well-defined stromal tumors that occur in the retroperitoneum, internal organs and peritoneal pelvic area, often expressed as melanocytes and smooth muscle markers. There are less than 20 cases of gastrointestinal PEComa reported in the literature, the biological behavior and malignant criteria have not yet been fully determined. In this paper, we examined the clinical and pathological features of a group of gastrointestinal PEComa and further evaluated its prognostic parameters. The authors retrospectively analyzed from consultation and outside