Reporting a rare case of a 17-year-old lady with late presentation of congenital diaphragmatic hernia. She presented with vague abdominal pain and postprandial vomiting. She underwent a diagnostic upper GI scopy with no significant findings. Chest X-ray and barium study for stomach were performed. Then CT scan was performed and showed herniation of bowel loops, mesentery and spleen into the left thoracic cavity through a large defect in the posterolateral aspect of the left hemidiaphgram. After the patient was operated, content reduced and defect was repaired. Thus CDH in adolescence is rare and a high index of suspicion is required. (C) 2014 Production and hosting by Elsevier B.V. on behalf of Egyptian Society of Radiology and Nuclear Medicine.