患者男,39岁。主因左腰部无痛性肿物10d入院。超声所见:于左腰部皮下脂肪层可见一大小约14.7cm×9.8cm×2.8cm弱强回声,边界尚清,内回声不均质。超声诊断:左腰部脂肪瘤(图1)。手术所见:于皮下脂肪层可见一大小15cm×10cm肿物。病理诊断:左腰部脂肪瘤。讨论脂肪瘤是一种由成熟脂 Male patient, 39 years old. Mainly due to left lumbar painless mass 10d admission. Ultrasound findings: in the left lumbar subcutaneous fat layer shows a size of about 14.7cm × 9.8cm × 2.8cm weak strong echo, the boundary is clear, the internal echo is not homogeneous. Ultrasound diagnosis: left lumbar lipoma (Figure 1). Surgical findings: visible in the subcutaneous fat layer of a size of 15cm × 10cm tumor. Pathological diagnosis: left lumbar lipoma. Lipoma is discussed by a mature lipid