Cross Section: Silicosis

An abnormal cross- section specimen of the lung shows large black nodules (arrows). This finding is seen in silicosis caused by exposure to silica dust. A normal cross-section specimen of the lung is shown on the right for comparison.

(From AP Fishman, Fishman's Pulmonary Diseases and Disorders, 3 ed, 1998, McGraw-Hill, Fig. 59-5; with permission.)