Fever of unknown origin, changing clinical course, and pleural effusion.
D003937:Diagnosis, Differential; D005334:Fever / Q000209:etiology*; D006801:Humans; D008100:Liver Abscess / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D010996:Pleural Effusion / Q000209:etiology*