Bathtub refinisher's lung: an unusual response to toluene diisocyanate.

Immunologic and inhalation challenge studies were performed on a patient engaged in bathtub refinishing who developed systemic and respiratory symptoms suggestive of hypersensitivity pneumonitis temporally related to his occupation. The refinishing process used a catalyst containing toluene diisocyanate, and all clinical features of the disorder were reproduced by challenge. No immunologic mechanism could be identified. A change of occupation resulted in complete relief of symptoms.

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