Fig. 14From: Congenital systemic venous return anomalies to the right atrium reviewa Azygos fissure and lobe schematic. Resulting from an abnormal course of the azygos vein in the apex of the right lung subsequent to a failure of migration. b Azygos fissure and lobe imaging. Azygos fissure and lobe, as seen on chest X-ray [A, B—magnification view], as a line that crosses the apex of the right lung ending in a tear shape, and on thoracic CT scan on coronal [C] and axial [D] planesBack to article page