组织细胞肉瘤是一类罕见的、淋巴造血系统起源的、形态和免疫表型均显示组织细胞分化的恶性肿瘤。WHO(2001)淋巴组织肿瘤分类将组织细胞肉瘤归为巨噬细胞/组织细胞源性肿瘤[1],国外此类报告较多[2,3],国内仅见几例报道[4-6]。本文报道我院近期遇见的1例原发于胃的组织细胞肉瘤, Tissue cell sarcoma is a rare, lymphatic hematopoietic origin, both morphologically and immunophenotypically showing the differentiation of tissue cells. WHO (2001) Lymphatic Tumor Classification Tissue cell sarcomas are classified as macrophages / tissue-derived tumors [1]. More reports are available abroad [2,3]. Only a few cases have been reported in China [4-6]. This article reports the hospital recently met in 1 case of primary gastric cell sarcoma,