Bronchoalveolar lavage in acute hypersensitivity pneumonitis caused by sulfasalazine.

Sulfasalazine has been reported to induce pulmonary eosinophilia and hypersensitivity with symptoms of dyspnea and fever. We present the results of bronchoalveolar lavage in a patient with acute sulfasalazine-induced hypersensitivity pneumonitis. The lavage specimen showed a significant influx of eosinophils.