Pulmonary Sequestration

General: Consist of pulmonary parenchyma not connected to the tracheo-bronchial tree and not usually supplied by the pulmonary artery but by a systemic vessel (~75% by a branch of the thoracic or abdominal aorta). Usually (~80%) drain into a systemic vein rather than a pulmonary vein.

Further classified as:

• Extralobar pulmonary sequestration
• Intralobar pulmonary sequestration
• Total pulmonary sequestration

Stains:

• Positive:
• Negative:
• Suggested, focused panel:

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