• Hyun Beak Shin and Yeon-Jun Jeong.
• Department of Surgery, Jeonbuk National University Medical School.
• Medicine (Baltimore). 2020 Jun 12; 99 (24): e20684.

RationaleLate presenting congenital diaphragmatic hernia (CDH) that develops after the neonatal period has various clinical manifestations and can often be misdiagnosed as pleural effusion, pneumonia, or pneumothorax. We report an adolescent case who was transferred to our hospital after iatrogenic gastric perforation during chest tube thoracotomy caused by misdiagnosis of pleural effusion.Patient ConcernsA 13-year-old boy with no medical history of conditions relevant to CDH and traumatic events visited a community hospital complaining of left upper quadrant abdominal pain and vomiting over the previous 3 days. The initial chest x-ray looked like pleural effusion at a cursory glance, so a chest tube thoracotomy was performed, upon insertion food-like materials drained through the tube.DiagnosisCDH and iatrogenic gastric perforation by chest tube were diagnosed by chest computed tomography scan.InterventionsThe patient was transferred to our hospital immediately, and emergent operation was performed. There was a large hernial defect on the left posterolateral side of the diaphragm and various intra-abdominal organs, including the stomach, had been displaced into the thoracic cavity. After manual reduction, stomach perforation by chest tube was identified. Wedge resection of the gastric perforation site was performed and the hernial defect in the diaphragm was closed with Gore-Tex mesh and nonabsorbable sutures.OutcomesThe patient was discharged without complication on the postoperative 15th day.LessonsLate presenting CDH can be misdiagnosed as pleural effusion on chest x-ray, so special attention should be given to a differential diagnosis to avoid any serious complications.

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