Recurrent pneumonia in adults is often the result of abnormalities such as endobronchial obstruction, aspiration, or immunodeficiency. Rarely, congenital or developmental pulmonary anomalies may result in recurrent pneumonia in adult patients; bronchopulmonary sequestration is one such anomaly. The pathogenesis of bronchopulmonary sequestration remains incompletely understood. The entity has two anatomic types, each differing significantly in presentation and treatment approach. When recurrent pneumonia is encountered, particularly in a young adult, the possibility of bronchopulmonary sequestration should be considered.