CTICasesPAPVR with Chronic SVC Occlusion
Imaging findings
CT chest shows a thick-walled right upper lobe cavity. There is partial anomalous pulmonary venous return (PAPVR) of the right upper lobe draining to the SVC, which is chronically occluded, leading to severe localized venous congestion and multiple right-to-left systemic-to-pulmonary venous collaterals.
Key takeaways
SVC syndrome in a patient with PAPVR of the right upper lobe can lead to localized pulmonary venous hypertension and congestion, mimicking infection or edema. Chronic venous occlusion triggers the development of extensive systemic-to-pulmonary venous collaterals, causing a functional right-to-left shunt.
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