患者女,61岁.2年前无意中发现左肩部有一肿块约2cm大小,质硬,基底可推动,肩关节活动自如,局部无任何不适.因肿块逐渐增大,于1989年11月来院就诊. 体检:左肩中部有—6×5×3cm大小肿块,扁平状,界清,光滑,质硬如骨,无压痛。局麻下行肿物切除术.切开皮肤,分离肿物,肿块在斜方肌上缘组 Patient female, 61 years old. Two years ago, she found a mass of about 2cm in the left shoulder, which was hard, the base could be pushed, the shoulder joint moved freely, and there was no local discomfort. As the lump gradually increased, she came to the hospital in November 1989. Physical examination: The middle part of the left shoulder has a size of -6 x 5 x 3 cm, which is flat, clear, smooth, and hard as a bone without tenderness. Local anesthesia followed by a mass resection. The skin was incised and the mass was removed. The mass was on the upper edge of the trapezius muscle group.