2007 Volume 21 Issue 5 Pages 677-684
A 79-year-old man was admitted to our hospital for further examinations of an abnormal shadow of the right lung field pointed out on medical examination. Chest computed tomographic and magnetic resonance imaging films revealed a cystic mass in the upper mediastinum and another mass in the region corresponded to S7 of right lower lobe, with an abnormal vessel branching from the left gastric artery. Arteriography verified that the aberrant artery was from the left gastric artery. The diagnosis of a Pryce's type III intralobar pulmonary sequestration and an upper mediastinal cyst was made on the basis of these findings, and then operation was performed. The aberrant artery was cut, the sequestrated lung was resected, and the upper mediastinal cyst was removed by video-assisted thoracoscopic surgery. This case of an intralobar pulmonary sequestration with an abnormal artery branching from the left gastric artery coexistent with a mediastinal bronchogenic cyst is very rare. It was thought that an intralobar pulmonary sequestration may be a congenital disease originated from the accessory lung bud abnormally budded from the foregut in the early fetal stages, followed by an abnormal blood supply from systemic circulation secondarily.
