A Case of Giant Right Atrium Diverticulum with Atrial Septal Defect.

Right atrium diverticulum is a rare congenital malformation. We present a previously unreported case of giant right atrium diverticulum (153 × 109 mm) in a 17-year-old female patient. Echocardiographic examination also showed an atrial septal defect (11 mm). Considering the risk of right atrium rupture, we performed femoral arteriovenous cannulation first, followed by median thoracotomy. The defect was repaired with an autologous pericardial patch. The patient recovered well after the operation, and this case is referential for surgical treatment of giant right atrium diverticulum.