Granulomatous disease associated with pulmonary deposition of titanium.

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Abstract
A patient presented with granulomatous lung disease associated with the pulmonary deposition of various metallic particles. To evaluate the relation between the metallic dust and the granulomatous process, lymphocyte transformation tests to aluminum sulphate, titanium chloride, beryllium sulphate, and nickel sulphate were performed. A lymphocyte proliferative response to titanium chloride was observed on two separate occasions; no responses to the other metals were shown. These results are consistent with hypersensitivity to titanium, and suggest, in this individual, a possible aetiological role between the inhalation of titanium and a granulomatous disease process.