No abstract available. Article truncated at 150 words. A 49-year-old woman was incidentally found to have a lung mass on a pre-operative chest x-ray done prior to an elective cholecystectomy (Figure 1). Chest computed tomography, ordered to further characterize this mass revealed a left lower lobe lobulated, cystic opacity with a feeding artery from the aorta, consistent with bronchopulmonary sequestration (BPS) (Figure 2). Given that she has not had any complications of BPS we elected to manage her conservatively with observation. BPS is a rare congenital malformation of the lower airways characterized by abnormal lung tissue that does not communicate with the tracheobronchial tree and receives its blood supply from the systemic circulatio...