患儿,男,7岁。因“发现左手短指并指畸形7年余”入院。体格检查:胸廓对称,无凹陷畸形,无反常呼吸运动,左侧胸壁平坦,皮肤菲薄,左侧乳头、乳晕较右侧小,左侧胸大肌缺如,胸小肌发育不良,心肺听诊无异常。左侧腋窝表浅,腋前襞消失;左肩明显高耸,肩峰及喙突较右侧稍高,左肩胛骨上抬,左肩关节内收受限,内旋轻度受限,外展、外旋、前 Children, male, 7 years old. Because “found the left hand short finger and deformity more than 7 years ” admission. Physical examination: chest symmetry, no depression deformity, no abnormal breathing exercise, the left chest wall is flat, the skin is thin, the left nipple, areola is smaller than the right, left pectoralis major absence, pectoralis hypoplasia, cardiopulmonary auscultation abnormal. The left armpit is superficial and the anterior axilla disappears; the left shoulder is obviously tall, the acromion and coracoid slightly higher than the right, the left scapula is raised, the left shoulder is adducted, the internal rotation is mildly restricted, the abduction and external rotation ,before