Fig. 2.

Bronchoscopic and pathological images of a CT-occult lesion. The patient was a 65-year-old male with a history of heavy smoking for more than 40 years. He was admitted to the hospital due to pulmonary nodules found in physical examination, and CT occult bronchial mucosal lesions of the central airway were found during bronchoscopy. a Conventional white light mucosal lesion morphology under bronchoscopy. b-d Mucosal vascular morphology under narrow-band imaging mode under bronchoscopy. e–h Pathological section images magnified 40 times, 100 times, 200 times and 400 times, respectively, Pathological diagnosis was mucosal squamous epithelial papillary hyperplasia with local mild dysplasia