Abstract
Newer-generation CT scanners with ultrawide detectors or dual sources offer millisecond image acquisition times and significantly decreased radiation doses compared to historical cardiac CT and CT angiography. This technology is capable of nearly freezing cardiac and respiratory motion. As a result, CT is increasingly used for diagnosing and monitoring cardiac and vascular abnormalities in the pediatric population. CT is particularly useful in the setting of pulmonary vein evaluation because it offers evaluation of the entire pulmonary venous system and lung parenchyma. In this article we review a spectrum of congenital and acquired pulmonary venous abnormalities, including potential etiologies, CT imaging findings and important factors of preoperative planning. In addition, we discuss optimization of CT techniques for evaluating the pulmonary veins.
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Supplementary file1 (MP4 1898 KB) Online Supplementary Material 1 Type 1 total anomalous pulmonary venous connection (TAPVC). CT angiography of a 1-day-old girl with abnormal echocardiography. Coronal maximum-intensity projection images demonstrate right and left pulmonary venous drainage into a common vein coursing superiorly in the left lung, which then takes a tortuous course through the superior mediastinum before extending vertically and draining into the innominate vein. Also present is complex congenital heart disease, including double outlet right ventricle with malposed great vessels, right aortic arch with mirror image branching, and vertebral segmentation anomalies
Supplementary file2 (MP4 9236 KB) Online Supplementary Material 2 Type 2 total anomalous pulmonary venous connection (TAPVC). CT angiography in 22-day-old girl with suspected TAPVC on echocardiography. Axial images from CT angiography demonstrates drainage of the left and right pulmonary veins into a large vertically oriented common vessel that extends inferiorly to drain into a dilated coronary sinus and the right atrium. Additionally, there is a persistent left superior vena cava that also drains to the coronary sinus
Supplementary file3 (MP4 1852 KB) Online Supplementary Material 3 Mixed (type 4) total anomalous pulmonary venous connection (TAPVC) in a 1-day-old boy with suspected TAPVC on echocardiography. Coronal maximum-intensity projection images from CT angiography demonstrate drainage of the right pulmonary veins via a common vein (long arrow) coursing into the left mediastinum and then vertically to connect to the innominate vein. A smaller tortuous vein (short arrows) drains a portion of the left lower lobe, traversing the mediastinum before extending vertically in the right mediastinum and connecting separately to the innominate vein. An additional left lower pulmonary vein (medium arrows) extends inferiorly, coursing below the diaphragm and into the portal venous system
Supplementary file4 (MP4 1656 KB) Online Supplementary Material 4 Left upper lobe partial anomalous pulmonary venous connection (PAPVC) in a 4-year-old boy with lymphadenopathy and fever of unknown origin. Axial contrast-enhanced chest CT demonstrates drainage of two left upper lobe pulmonary veins into a vertically oriented anomalous vein (arrow) along the left superior mediastinum, eventually connecting to the left brachiocephalic vein. Note the lack of vascular structures anterior to the left mainstem bronchus, helping differentiate the vertical vein from a persistent left superior vena cava
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Romberg, E.K., Stanescu, A.L., Bhutta, S.T. et al. Computed tomography of pulmonary veins: review of congenital and acquired pathologies. Pediatr Radiol 52, 2510–2528 (2022). https://doi.org/10.1007/s00247-021-05208-3
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DOI: https://doi.org/10.1007/s00247-021-05208-3