Chemical Pneumonitis and Acute Dyspnea Following Exposure to Tribenuron Methyl

A previously healthy 48-year-old man admitted to our clinic with an acute dyspnea and pneumonia like illness following use of a tribenuron methyl containing herbicide agent. Exposure was inhalational in nature during agricultural spraying without implementing the precautions. The patient completely recovered by methyl prednisolone, inhaler corticosteroid and long acting beta-2 agonist combination therapy. For this case, the differential diagnosis of chemical pneumonitis and acute dypnea from inhalational exposure to herbicide and clinical findings are discussed