Aneurysm of an Aberrant Systemic Artery to the Lung

Abstract

Tatli S, Yucel EK, Couper GS, Henderson JM, Yolonda CL ystemic arterial supply to pulmonary parenchyma is a rare congenital anomaly [1]. Pulmonary sequestration is one of the most common congenital pulmonary malformations in which the involved lung parenchyma is supplied by an aberrant systemic artery [1– 5]. Rarely, an anomalous systemic artery may supply an area of otherwise normal lung, which is generally the posterobasal segment of the left lower lobe [5–8]. An aneurysm of the aberrant artery to lung is extremely rare with only three previously reported cases in the literature [9–11]. We report a case of a fusiform aneurysm of an aberrant systemic artery to the lung that arose from the distal descending thoracic aorta, supplying the posterobasal segment of the right lung, with maximal diameter of 3 cm. The diagnosis was accurately made using CT angiography using a multidetector scanner. The patient was treated successfully by right lower lobectomy and resection of the aneurysmal aberrant artery.