1临床资料患者,女,32岁,发现左肩肿块3年,进行性增大伴功能障碍1年就诊。2005年发现肿块时,约1 cm×1 cm×1 cm大小,质软,活动度大,不影响肩关节活动。2007年肿块进行性肿大,质地变硬。2008年出现肩关节活动障碍肿块,局部使用止痛药可以缓解。入院检查:左上臂中段轻度肿胀,肩峰 1 clinical data, female, 32 years old, found that 3 years left shoulder mass, progressive increase with dysfunction 1 year treatment. When the mass was found in 2005, it was about 1 cm × 1 cm × 1 cm in size and soft in texture. It had a great activity without affecting the activity of the shoulder. In 2007 the mass swelling, texture hard. Shoulder joint disorder in 2008 appeared mass, local use of painkillers can be alleviated. Admission examination: mild left middle upper arm swelling, acromion