Pulmonary sequestration

Refers to a mass of lung tissue without any connection to the airway system.

Blood supply arises from the aorta or its branches.

Blood supply is usually from one or more ab2242ant arteries.

Pulmonary sequestration-can be extralobar, being external to the lung and can be found at any site in the thorax.

Extralobar lesions most commonly found in infants and may be associated with congenital abnormalities.

Intralobar sequestrations present as masses of lung parenchyma that share a contiguous pleural lining with the adjacent normal lung and drain via the pulmonary venous system. to the

Intralobar lesions are found within the lung and are associated with infections or bronchiectasis.

Patients present in late childhood and adolescence with recurrent cough or multiple episodes of pneumonia.

Intralobar sequestration more common in the left posteriorobasal region.

More than 90% of intralobar sequestrations are located in lung bases.

Extralobar sequestration have a distinct low surface separate from normal lung and their own ab2242ant venous drainage, and are commonly diagnosed in infancy due to respiratory failure or an incidental finding.

Extralobar sequestration commonly occurs in the left lung, but can be in any area of the lung.

Treatment is resection.

Severe complications of intra-lobar sequestration include infection and hemorrhage.
Even if incidentally detected or symptoms are moderate, a curative surgical resection with parenchymal preservation is the goal.

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