患者男,50岁,于1980年1月发现左大腿外侧上1/3处有6×5cm的肿块,表面光滑,质地偏软,活动差,与皮肤无粘连,局部偶有压迫感,半年来有明显增大。于1980年8月2日在腰麻下手术切除。肿块呈扁圆形,大小s×4×2.5cm,肿块无包膜,周围附有肌肉,脂肪组织,切面淡褐色与灰白色相间,其中 The patient was male, 50 years old. In January 1980, a 6×5 cm mass was found on the upper 1/3 of the left thigh. The surface was smooth, the texture was soft, the activity was poor, there was no adhesion to the skin, and there was occasional partial pressure. There is a clear increase. Surgical removal under spinal anesthesia on August 2, 1980. The tumor was oblate and its size was s × 4 × 2.5 cm. The tumor was covered with no capsule, surrounded by muscles and adipose tissue. The cut surface was pale brown and gray and white.