Cobblestone Airways Mayo Clinic Proceedings Timothy J. Barreiro, DO, MPH  Mayo Clinic Proceedings  Volume 91, Issue 12, (December 2016) DOI: 10.1016/j.mayocp.2016.09.012 Copyright © 2016 Mayo Foundation for Medical Education and Research Terms and Conditions

Figure 1 Photomicrograph from a bronchoscopy featuring endobronchial mucosal nodules, each measuring 3 to 4 mm in diameter, the abnormalities seen in sarcoidosis. Image of the lower subsegmental bronchi. RLL = right lower lobe; RML = right middle lobe. Mayo Clinic Proceedings 2016 91, DOI: (10.1016/j.mayocp.2016.09.012) Copyright © 2016 Mayo Foundation for Medical Education and Research Terms and Conditions

Figure 2 Histology of bronchial mucosal nodule. Panels (10×) show columnar epithelium with a large noncaseating granuloma. Stating was negative for fungal or infection etiologies. Mayo Clinic Proceedings 2016 91, DOI: (10.1016/j.mayocp.2016.09.012) Copyright © 2016 Mayo Foundation for Medical Education and Research Terms and Conditions

Supplemental Figure 1 Mayo Clinic Proceedings 2016 91, DOI: (10.1016/j.mayocp.2016.09.012) Copyright © 2016 Mayo Foundation for Medical Education and Research Terms and Conditions

Supplemental Figure 2 Mayo Clinic Proceedings 2016 91, DOI: (10.1016/j.mayocp.2016.09.012) Copyright © 2016 Mayo Foundation for Medical Education and Research Terms and Conditions