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Extralobar Pulmonary Sequestration
Daniel Cabral1, Carina Silvestre2, Teresa Cardoso3
1Serviço de Cirurgia Torácica, Hospital Pulido Valente, Centro Hospitalar Universitário de Lisboa Norte, Portugal.
Portuguese Journal of Cardiac Thoracic and Vascular Surgery
|January 14, 2023
Summary
A rare case of extralobar pulmonary sequestration was found in a 71-year-old male. This condition involves abnormal lung tissue supplied by systemic arteries and drained by systemic veins, mimicking other lung pathologies.
Area of Science:
- Radiology
- Thoracic Surgery
- Pulmonology
Background:
- Pulmonary sequestration is a rare congenital lung malformation.
- It can be intralobar or extralobar, with varying presentations.
- Diagnosis often requires advanced imaging techniques.
Purpose of the Study:
- To report a case of asymptomatic extralobar pulmonary sequestration.
- To highlight the diagnostic utility of CT and PET-CT in identifying this anomaly.
- To describe the vascular supply and drainage characteristics.
Main Methods:
- Non-contrast CT scan for initial lung consolidation detection.
- Positron Emission Tomography-Computed Tomography (PET-CT) for metabolic activity assessment.
- Contrast-enhanced CT scan for detailed vascular anatomy elucidation.
Main Results:
- A left lower lobe consolidation was identified.
- Increased uptake on PET-CT suggested an active process.
- Contrast-enhanced CT confirmed extralobar pulmonary sequestration.
- Venous drainage to the left azygos vein and dual arterial supply from the thoracic aorta were visualized.
Conclusions:
- Extralobar pulmonary sequestration can be an incidental finding in asymptomatic adults.
- Multimodality imaging, particularly contrast-enhanced CT, is crucial for accurate diagnosis.
- Understanding the specific vascular anatomy is vital for surgical planning.
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