Retrospective review of the diagnosis and treatment of pulmonary sequestration in 28 patients: surgery or endovascular techniques?

Pulmonary sequestration (PS), which accounts for less than 6.4% of all congenital pulmonary malformations, exhibits three major features: an aberrant blood supply of a large caliber artery, a bronchial anomaly and dysgenesis of the parenchyma (1-3). There are two types of PS: intralobar pulmonary sequestration (ILS) and extralobar pulmonary sequestration (ELS). Contrary to ILS, which is located within normal lung parenchyma, ELS is separated with its own visceral pleura (3). A systemic artery provides blood supply to both ILS and ELS. For ILS, the blood is drained into pulmonary veins. However, for ELS, the blood is drained into systemic vein (4)