創傷後橫膈疝氣是不常見但是嚴重的問題，常見於胸腹鈍傷或穿透性傷害之後。創傷性橫膈疝氣的診斷相當困難，重要的是需要保持警覺心。因為疝氣在創傷之後延遲很久才表現，橫膈創傷已不復記憶。我們在此報告一位55歲男性，在遭受胸部刺傷36年後出現橫膈疝氣。胸部X光顯示左上肺葉有結節狀斑塊，電腦斷層影像顯示橫膈破裂併腸疝氣。手術時發現大腸和網膜疝氣合併小腸及大腸缺血發炎，手術將大腸和網膜推回並修補橫膈破孔，並不需切除腸道，但是為了解決小腸及大腸缺血發炎，手術中以胃管進行空腸及迴腸造口。從此個案可以了解，在曾有受傷病史的病患，延遲橫膈疝氣的診斷不應被遺忘。

Traumatic diaphragmatic hernia is an uncommon but severe problem that is usually seen in patients suffered from blunt abdomino-thoracic trauma or penetrating injuries. Blunt diaphragmatic hernia is difficult to diagnose and high index of suspicion is vital. Because of late presentation, trauma can be forgotten and diaphragmatic injury can be omitted. We report an interesting case of diaphragmatic hernia in a 55-year-old man presenting 36 years after the initial thoracic stabbing injury. The chest X ray revealed nodular opacity in the left lung field and the CT image confirmed the picture of diaphragmatic rupture with intestinal herniation. The surgical findings revealed herniation of the colon and omentum with ischemic change, the herniated organs were reduced without resection and diaphragmatic defect closed. To solve the problem of ischemic enterocolitis, tube jejunostomy and tube ileostomy were performed. The diagnosis of late diaphragmatic hernia should always be remembered in any patient with trauma history.