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Figure 1. A Ferruginous Body.
The classic dumbbell-shaped, sometimes beaded appearance of an asbestos fiber, also known as a ferruginous body, is evident in an iron-mucopolysaccharide matrix on scanning electron microscopy (x1595). The fibers were obtained at the postmortem examination of a 58-year-old man with a history of smoking 100 packs of cigarettes per year and long-term exposure to asbestos who died of secondary interstitial pulmonary fibrosis and stage IV non-small-cell bronchogenic carcinoma.
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