[Diffuse interstitial pneumopathy related to tungsten carbide, confirmed by bronchoalveolar lavage, and responding to corticotherapy].

The authors report a case of severe diffuse interstitial hard metal lung disease responding to corticosteroid therapy. They point out that the course of this disease may be regressive and emphasise that analysis of broncho-alveolar washings showed no abnormality in the differential cell count. Mineralogical study of the same material confirmed exposure.