胸膜肿瘤分原发性与转移性两大类，转移性肿瘤十分多见。但胸膜原发性肿瘤较为罕见，在临床工作中遇到一例，报道如下。患者男性，23岁，大学生。咳嗽、胸痛气促6月入院诊治。体查：口唇发绀，呼吸费力，26次／分。右胸廓饱满，右肺呼吸音减弱，右肩呷下线第8后助下叩诊浊音。 Pleural tumors are divided into primary and metastatic categories, and metastatic tumors are very common. However, primary tumors of the pleura are rare, and one case has been encountered in clinical work. The report is as follows. The patient was male, 23 years old, college student. Cough, chest pain, shortness of breath, admitted to hospital in June. Physical examination: lips cyanosis, breathing hard, 26 times / min. The right thorax was full, and the right lung breath sounds were weakened. The right shoulder squad lined up after the 8th to help the next patient with dullness.