膈疝在胸外科较为常见 ,我院自 1 986年 1月～1 998年 1 2月共手术治疗 35例 ,其中术前误诊 3例。现报告如下。1　临床资料　　例 1　女 ,2 8岁。因左胸胀闷、咳嗽、咳白粘痰3个月 ,外院 CT拟诊为肺癌入院。病后体重下降 5公斤。查体清瘦 ,左下肺呼吸音减弱 ,肝脾肋下未触及。 Diaphragmatic hernia in thoracic surgery is more common in our hospital from January 1986 to January 1998, a total of 35 cases of surgical treatment, of which 3 cases were misdiagnosed before surgery. The report is as follows. 1 clinical data 1 female, 2 8 years old. Left chest swelling due to nausea, cough, cough white sticky sputum for 3 months, outside the hospital CT diagnosis of lung cancer admitted to hospital. Weight loss after illness 5 kg. Check lean, lower left lung breath sounds weakened, liver and spleen ribs did not touch.