脂肪瘤是软组织尤其是中胚层最常见的良性肿瘤之一。脂肪组织在人体分布很广,凡有脂肪组织的部位均可发生脂肪瘤,但最常发生于皮下脂肪组织内,体表最常见的部位是肩部、背部、前壁及臀部等。病因及病理;病因不明,可能与神经内分泌失调有关。脂肪瘤由成熟的脂肪细胞组成,表面被覆一层很薄的纤维包膜。瘤组织内有许多纤维索形成 Lipoma is one of the most common benign tumors in soft tissue, especially mesoderm. Adipose tissue is widely distributed in the human body. Liposuction can occur in any site where adipose tissue occurs, but it occurs most often in subcutaneous adipose tissue. The most common sites on the body surface are the shoulder, back, anterior wall, and buttocks. Etiology and pathology; etiology unknown, may be related to neuroendocrine disorders. Lipoma consists of mature adipocytes and is covered with a thin layer of fiber capsules. There are many fibroses in the tumor tissue