Pleural effusion and thickening due to cabergoline use in a patient with Parkinson's disease.

A 62-year-old Caucasian man with a history of Parkinson's disease developed bilateral pleural thickening and a large, right-sided, exudative pleural effusion. Further investigations revealed a chronic inflammatory process involving the pleura as a result of exposure to cabergoline used to treat the Parkinson's disease. The inflammatory process reversed after the discontinuation of cabergoline.