An 8-month-old male with secondary pulmonary vein stenosis due to total anomalous pulmonary venous connection repair who presented with shortness of breath. (A) Axial contrast-enhanced thoracic MDCT angiography CT image shows ill-defined, mildly heterogeneously enhancing, non-calcified soft tissue mass (asterisk) in the expected location of the right pulmonary vein. Right pulmonary vein is absent. Pleural thickening (arrow) is seen. Left upper pulmonary vein (LUPV) and left lower pulmonary vein (LLPV) are patent. LA = left atrium. (B) Axial lung window CT image demonstrates ground-glass opacity (asterisk) in the right lower lobe, septal thickening (arrowheads), and pleural thickening (arrows). (C) 3D volume-rendered vascular reconstruction CT image in the posterior projection view shows absent right pulmonary vein in the expected location (asterisk). Patent left upper pulmonary vein (LUPV) and left lower pulmonary vein (LLPV) are seen. DA = descending aorta.