1临床资料患者男,84岁。右侧胸壁肿块7月余。患者于7个月前无意间发现右前上胸壁一肿块,约鹌鹑蛋大小,局部无红肿及疼痛不适,无破溃及流脓,未予重视,未经治疗。近2月来患者感肿块进行性增大,并出现右上肢酸胀感,无活动及感觉障碍。入院后胸部CT检查示:右侧胸大肌内见一约4.6cm×5.9cm大类圆形软组织肿块影,界清,增强扫描动脉期可见边缘条片状强化,静脉期及延迟期向中心充盈(图1)。诊断:右侧胸大肌内 1 clinical data male patient, 84 years old. The right chest wall mass more than 7 months. 7 months ago, patients inadvertently found a tumor on the right anterior chest wall, about the size of quail eggs, no local swelling and pain discomfort, no ulceration and pus, no attention, untreated. Nearly two months to patients with progressive increase in sensory mass, and the right upper limb soreness, no activity and sensory disturbances. Chest CT examination after admission showed: the right pectoralis major see a large 4.6cm × 5.9cm large round soft tissue mass, boundary clear, enhanced scan arterial phase visible edge strip enhancement, venous phase and delay to the center Filled (Figure 1). Diagnosis: right pectoralis major