Adenocarcinoma in pulmonary sequestration.

A 67-year-old male smoker presented with hemoptysis and recurrent pneumonia. Chest computed tomography showed an emphysematous cyst and air-fluid level cavities in the left lower lobe. A left lower lobectomy was performed. The intraoperative finding was intralobar sequestration. Histopathology revealed adenocarcinoma within the sequestrated lobe. Only 8 cases of lung cancer and sequestration have been reported since 1963.