本文报告脂肪肿瘤860例,主要从肿瘤的发生部位、深度、组织病理学及年龄上分析了脂肪瘤及脂肪肉瘤的特点。提出了脂肪肉瘤无论那一型,在组织形态上或多或少有瘤细胞的异形性,有脂肪母细胞的异形性,有核分裂。这是从组织学上鉴别脂肪组织良恶性肿瘤的可靠依据。脂肪瘤多发生在皮下浅表部位,脂肪肉瘤多发生在深层组织及腹膜后。 This article reports 860 cases of fatty tumors, mainly from the tumor site, depth, histopathology and age analysis of the characteristics of lipoma and liposarcoma. It is proposed that liposarcoma, regardless of the type, has a more or less irregular morphology of the tumor cells in the tissue morphology, a fat mother cell heterogeneity, and nuclear division. This is a reliable basis for histologically identifying benign and malignant tumors of adipose tissue. Lipomas usually occur in the superficial parts of the skin, and liposarcoma mostly occurs in deep tissues and behind the retroperitoneum.