Adenocarcinoma in pulmonary sequestration: A case report and literature review.

A 67-year-old male smoker presented with hemoptysis. Chest computed tomography showed an emphysematous cyst and air-fluid levels in the left lower lobe of the lung. A lobectomy was performed. Intraoperatively, the lesion was found to be an intralobar sequestration. Histopathology showed adenocarcinoma within the sequestrated lobe. This case suggests the need for criteria for a thorough diagnostic work-up in patients diagnosed with pulmonary sequestration, to rule out carcinoma as a distinct clinicopathological entity.