[Inflammatory endotracheal polyp associated with lung cancer treated by high-power diode laser]

A 74-year-old man was admitted to our department for surgery of light lung cancer (c-T1N0 M0 stage IA). Preoperative bronchoscopy revealed a smooth-surfaced polypoid lesion about 3 mm in diameter in the left main bronchus. Pathological findings of the biopsied specimen revealed inflammatory granulation tissue. Right upper lobectomy and lymph node dissection was performed and the pathological diagnosis was squamous cell carcinoma of the lung with no lymph node metastasis (p-T1N0M0 stage IA). Bronchoscopy after 2 and 5 month revealed no change of the polypoid lesion and the biopsied specimen revealed no malignancy. The polypoid lesion was identified microscopically as inflammatory polyp. Therefore, the polypoid lesion was treated with a new high power diode laser system (DIOMED 25, OLYMPUS). Bronchoscopy after 10 month showed complete disappearance of the polypoid lesion.