Extralobar Sequestration Complicated by a Cystic Hamartoma in an Adult.

A 49-year-old woman presented after a respiratory infection with an abnormal chest roentgenogram demonstrating a cystic calcified mass at the base of the right lung. A chest computed tomographic angiogram demonstrated that the blood supply arose from the abdominal aorta. This extralobar sequestration was surgically resected using video-assisted thoracoscopy without complication. The pathology report showed a cystic hamartoma. This case highlights the importance of preoperative evaluation of the blood supply of suspected sequestrations and the very rare disorder that was found.