Fig. 3
From: Unilateral pulmonary vein atresia presenting with recurrent haemoptysis in a child: a case report
Multiplanar reconstructed cardiac CT images. a Significant size discrepancy between right and left pulmonary arteries. b Right lung parenchymal changes with diffuse interlobular septal thickening and mosaic attenuation. c Systemic-to-pulmonary collateral artery (white arrows) from the coeliac artery supplying the right lung. The hepatic segment of inferior vena cava is interrupted. d Both atrial appendages are long and narrow; characteristic of left atrial isomerism. e Both upper lobar bronchi course below the respective pulmonary arteries (hyparterial bronchi) which is typical of left bronchial isomerism. f Lobulated spleen which is a variant of polysplenia. Also shown is part of the dilated azygous vein. RPA = right pulmonary artery, LPA = left pulmonary artery, CHD = congenital diaphragmatic hernia, IVC = inferior vena cava, LAA = left atrial appendage, Azyg = azygous vein, S = spleen