Autofluorescence bronchoscopy can discriminate normal from abnormal bronchial mucosa due to the difference in fluorescence emission: normal bronchial mucosa emits a green coloured fluorescence and abnormal bronchial mucosa emits a red-brown coloured fluores... Autofluorescence bronchoscopy can discriminate normal from abnormal bronchial mucosa due to the difference in fluorescence emission: normal bronchial mucosa emits a green coloured fluorescence and abnormal bronchial mucosa emits a red-brown coloured fluorescence. Autofluorescence image of a patient with a history of lung adenocarcinoma resected 2 yrs prior (b); the arrows point at a moderate dysplastic lesion on a subsegmental carina which is difficult to identify with white light (a). C. Dooms et al. Eur Respir Rev 2010;19:229-236 ©2010 by European Respiratory Society