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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
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Summary
This summary is machine-generated.

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.

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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.