Abstract
Lung cancer (LC), is a disease who has increasing prevalence, with a major impact to morbidity and mortality but also significant consumption of resources. The incidence of LC cases is in progression and early diagnosis becomes extremely important in increasing the quality of life and survival. Detection of preneoplastic mucosal lesions can be performed with autofluorescence bronchoscopy (AF). This is not a new method of diagnosis being still in research for standardization and an applicability as easy as possible. AF should be used as a screening method in pacients with suspected LC.