自发性血气胸的病例并非鲜见。但由于易误诊或处置不当会危及生命，或者产生严重并发症。现将近几年所见5例报告如下。1临床资料5例均为男性，年龄17～33岁。皆为突然发病，其中3例有较剧烈的活动诱因（搬运货箱、跑步登楼、快速骑自行车）；另2例无明显诱因。初始自觉患侧胸背 Cases of spontaneous pneumothorax are not uncommon. However, misdiagnosis or improper handling can be life-threatening or result in serious complications. In recent years, we see 5 cases reported below. A clinical data of 5 cases were male, aged 17 to 33 years. All of them were sudden onset. Among them, 3 cases had more intense incentive activities (carrying containers, climbing the stairs and riding bicycles quickly); the other 2 cases had no obvious incentive. Initial conscious ipsilateral chest back