膈疝主要依靠钡餐或钡灌肠诊断,偶尔患者作CT检查。因此,从CT上认识膈疝的特征性表现是必要的。现将我院CT发现巨大膈疝一例报告如下: 患者男,18岁,学生。因体检胸透发现左胸腔异常阴影而作CT检查。患者出生后三个月曾因呼吸困难、紫绀入院治疗好转,一岁半时,再次因呼吸困难而入院,X线胸片发现左中下肺野囊状阴影,拟诊肺囊肿,经治疗病情稳定至今。既往无手术及外伤史。体检: Diaphragmatic hernia mainly rely on barium meal or barium enema diagnosis, and occasionally patients for CT examination. Therefore, recognizing the characteristic manifestation of diaphragmatic hernia from CT is necessary. Now my hospital found a huge case of diaphragmatic hernia reported as follows: Patient male, 18 years old, student. Chest thoracotomy due to physical examination revealed an abnormal shadow of the left chest for CT examination. Three months after birth, he had difficulty breathing and cyanotic admission was improved. At the age of one and a half years, he was hospitalized again due to dyspnea. X-ray showed left-lobe cystic shadow and pulmonary cyst diagnosed. After treatment, Stable till now. No history of surgery and trauma. Physical examination: