WARFARIN-INDUCED EOSINOPHILIC PLEURISY

A 51-year-old man was admitted to our hospital because of dry cough an d low grade fever with right-sided pleural fluid and blood eosinophili a. Warfarin had been prescribed following coronary artery bypass graft ing. After the discontinuation of warfarin the clinical and chest X-ra y findings improved; readministration of the drug caused recurrent blo od eosinophilia and pleural effusion in the other lung. Since no other specific etiologies for eosinophilia and pleural effusion were determ ined by extensive evaluation, warfarin seemed to be associated with hi s illness. This is the first report of warfarin-induced eosinophilic p leurisy.