CTICasesCommon Ostium of the Inferior Pulmonary Veins
Imaging findings
Chest radiography demonstrates a subtle, well-defined opacity in the left infra-hilar region on the lateral projection. Contrast-enhanced chest CT reveals an unusually large common ostium of the inferior pulmonary veins draining into the left atrium, representing a prominent anatomical variation.
Key takeaways
A common ostium of the pulmonary veins is a benign congenital anatomical variant that can occasionally be unusually large and mimic a mass or vascular anomaly on chest radiographs. Cross-sectional imaging helps easily differentiate this normal variant from pathology and prevents unnecessary diagnostic workup.
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