Bronchial anthracosis is defined as appearance of multiple dark anthracotic pigmentations on large airway mucosa with or without airway narrowing or obliteration. Since there has been vague and controversy regarding the relationship between bronchial anthracosis and pulmonary tuberculosis, we conducted this study to shed light on this matter. Materials and Methods: In this cross-sectional study, data was obtained from reviewing the files of 1,594 patients who underwent bronchoscopy in Afzalipour Hospital during 2003 to 2007. Those with dark pigmentation on their airways mucosa were considered as having bronchial anthracosis. During bronchoscopy, samples were collected from the airways in the form of bronchoalveolar lavage and then the.
