CTICasesUnilateral Pulmonary Venous Obstruction with Uncorrected VSD
Imaging findings
Non-contrast CT demonstrates asymmetric lung findings: the left lung shows signs of severe pulmonary arterial hypertension with massively enlarged pulmonary arteries, while the right lung demonstrates diffuse septal thickening, bronchial cuffing, and a small right pulmonary artery. Contrast-enhanced CT reveals a large, uncorrected ventricular septal defect (VSD) and complete absence of pulmonary venous drainage from the right lung into the left atrium.
Key takeaways
Unilateral pulmonary venous obstruction or congenital absence of pulmonary veins is a rare condition that leads to localized pulmonary venous congestion, lymphatic dilatation, and interstitial edema on the affected side. This creates a striking asymmetry on chest imaging, mimicking unilateral interstitial lung disease, while the contralateral side may show signs of severe pulmonary hypertension, especially in the setting of a co-existing uncorrected left-to-right shunt.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Uncorrected Ventricular Septal Defect with Bronchial Artery AneurysmCongenital
- Cavitating Pulmonary Rheumatoid NodulesAutoimmune
- Pericardial Epithelioid HemangioendotheliomaNeoplastic
- Anterior Mediastinal LymphangiomaCongenital
- Cor Triatriatum Dexter and SinisterCongenital
- Traumatic Myocardial ContusionTrauma
- Coarctation of the Aorta with Bicuspid Aortic ValveCongenital
- Coumadin-Induced Tracheobronchial CalcificationMetabolic
See all cases from August 11, 2017 →
Related Congenital cases
- Lateral Costal Artery (Accessory Thoracic Vessel)
- Eisenmenger Syndrome with Giant Pulmonary Artery Aneurysm Secondary to Secundum Atrial Septal Defect
- Common Ostium of the Inferior Pulmonary Veins
- Bronchial Atresia with Incidental Lung Cancer
- Diaphragmatic Eventration
- Giant Sinus of Valsalva Aneurysm