Ultra-thin Endoscopic Findings of Bronchioloalveolar Carcinoma

We reviewed computed tomographic scans and ultra-thin bronchoscopic findings of 5 cases of bronchioloalveolar carcinoma, 1 with a solitary nodule (SN), 1 with diffuse miliary nodules similar to metastatic tumor (DMN), and 3 with radiographic patterns suggestive of pneumonia (RPSP) roentgenologically. Endoscopic findings showed abundant frothy secretions from respiratory bronchioles, sputum due to occlusion, and diffuse polypoid lesions in patients with RPSP. Diffuse polypoid lesions may suggest the invasive pattern of bronchioloalveolar carcinoma. We observed tumor in the SN patient, stenosis and paleness of the mucosal surface of the bronchioles in the DMN patient.