Overview
Congenital atresia of a cardiac vein, specifically unilateral pulmonary vein atresia, involves obstruction of blood flow from a portion of the lung to the left atrium, often leading to pulmonary hypertension and respiratory symptoms depending on severity and associated anomalies 12.Diagnosis
Clinical Presentation: Hemoptysis, recurrent pulmonary infections, and normal or small lung with reticular markings 2.
Imaging: Chest radiograph showing characteristic findings; isotopic ventilation perfusion scan suggestive of the diagnosis 1.
Confirmatory Tests:
- Radionuclide perfusion studies demonstrating decreased blood flow to the affected lung 2.
- Pulmonary angiography revealing decreased pulmonary artery size, pruned peripheral branches, stasis of contrast material, and nonvisualization of draining pulmonary veins 2.
Suspected Diagnosis: Strongly suspected based on imaging features before definitive catheterization 1.Management
Surgical Intervention: Removal of the involved lung or lobe is the primary treatment approach 2.
Supportive Care: Management of symptoms such as recurrent infections and hemoptysis, though specific drug classes or doses are not detailed in the abstracts 12.Special Populations
Pediatrics: Condition primarily affects children, with varied presentations from asymptomatic to severe respiratory symptoms 12.Key Recommendations
Suspect unilateral pulmonary vein atresia based on characteristic radiographic and perfusion scan findings before catheterization (Evidence: Moderate 1).
Confirm diagnosis with pulmonary angiography to visualize specific vascular abnormalities (Evidence: Moderate 2).
Consider surgical resection of the affected lung or lobe as the definitive treatment (Evidence: Expert opinion 2).References
1 Beerman LB, Oh KS, Park SC, Freed MD, Sondheimer HM, Fricker FJ et al.. Unilateral pulmonary vein atresia: clinical and radiographic spectrum. Pediatric cardiology 1983. link
2 Swischuk LE, L'Heureux P. Unilateral pulmonary vein atresia. AJR. American journal of roentgenology 1980. link