Iatrogenic anterior diaphragmatic hernia in childhood.

Congenital anterior diaphragmatic hernias (ADH) account for 2 - 6 % of diaphragmatic defects, whereas acquired ADH are rare. These hernias are most often the result of blunt or penetrating trauma. This is the first report of iatrogenic ADH in childhood. Two children with asymptomatic, iatrogenic ADH were diagnosed at 6 and 12 months of age, respectively. Both had undergone previous cardiac surgery requiring pericardial drainage. The ADH was seen on an incidental chest X-ray in one patient, and during a laparoscopic-assisted gastrostomy in the other. Both were successfully repaired laparoscopically. Subxiphoid pericardial drains may result in iatrogenic ADH. A high index of suspicion after cardiac surgery is necessary to avoid missing this potentially serious complication. Laparoscopy is a useful tool in both the diagnosis and repair of this condition.