皮下气肿是气胸的并发症之一。气体可通过胸膜破裂口沿大血管筋膜进入皮下组织,亦可由破裂口处直接进入皮下组织,少数皮下气肿原因不明。皮下气肿多见于胸部、颈部,严重时蔓延至面部、双上肢、腹部及会阴部等。纵隔气肿时可严重影响血液循环,危及生命。皮下气肿轻者可在原发病 Subcutaneous emphysema is one of the complications of pneumothorax. Gas through the pleural rupture along the vascular fascia into the subcutaneous tissue, but also by the rupture directly into the subcutaneous tissue, a small number of subcutaneous emphysema for unknown reasons. Subcutaneous emphysema more common in the chest, neck, severe spread to the face, upper extremities, abdomen and perineum and so on. Mediastinal emphysema can seriously affect the blood circulation, life-threatening. Subcutaneous emphysema light in the original disease