Pulmonary Sequestration

Pulmonary sequestration involves a portion of lung tissue which is not in communication with the pulmonary arterial or bronchial tree.

Intralobar sequestrations are within the lung tissue, usually of the left lower lobe, and are diagnosed in childhood. These lesions may have a secondary connection to the tracheobronchial tree. Treatment is usually lobectomy and is reserved for patients who are symptomatic.

Exralobar sequestrations are outside of the main lung parenchyma, usually posterior and left, and usually have their own visceral pleura. These lesions are typically diagnosed in infancy and treatment is simple excision if symptomatic.

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