Intralobar Pulmonary Sequestration Masquerading as Lung Abscess: A Rare Paediatric Presentation

Pulmonary sequestration refers to lack of normal airway connection and aberrant vascular supply, and it may be either intralobar or extralobar. Bronchial atresia involving the lower lobes, especially the left lower lobe, is often associated with aberrant systemic arterial connection, forming an “intralobar sequestration” in which a region of parenchyma is functionally isolated from the remainder of the lung.1 Pulmonary sequestration is an uncommon condition that accounts for 0.15-6.4% of all pulmonary malformations and is typically diagnosed in childhood.2 We present a rare case of intralobar pulmonary sequestration in a 25 months old female involving the right lower lobe with secondary infection.