hard metal disease

hard metal disease

pneumoconiosis caused by inhalation of fine particles of cobalt, usually in conjunction with tungsten carbide. In early stages reversible hyperplasia and metaplasia of the bronchial epithelium are seen. Later, subacute alveolitis and then chronic interstitial fibrosis develop. Also called cobalt lung.

hard metal disease

A respiratory disorder caused by the inhalation of cobalt and metal carbides, esp. tungsten carbide. Its primary symptoms are cough and breathlessness during exertion. Lung biopsies show markedly abnormal giant cells in the interstitium of the lung. The disease is occasionally fatal if untreated. Synonym: cobalt lung