Adult pulmonary sequestration: a hidden cause of recurrent hemoptysis (case report).

Pulmonary sequestration (PS) is a rare congenital malformation where abnormal lung tissue lacks a connection to the airways and receives blood supply from systemic arteries. This case report describes a 30-year-old man with recurrent hemoptysis diagnosed with intralobar PS (ILS) as the cause. He underwent video-assisted thoracoscopic surgery to clip and section the aberrant artery, resulting in a successful outcome with no further bleeding. The case emphasizes considering ILS in diagnosing hemoptysis, even in adults with atypical presentations, and highlights the utility of CT angiography in identifying the abnormal blood supply for definitive diagnosis and guiding minimally invasive surgical treatment.