title: Current concepts in diagnosing the cause of pleural effusion.
mesh_terms: D000368:Aged; D001706:Biopsy; D002452:Cell Count; D005122:Exudates and Transudates / Q000032:analysis / Q000166:cytology; D006331:Heart Diseases / Q000150:complications / Q000175:diagnosis; D006801:Humans; D007239:Infections / Q000175:diagnosis; D010994:Pleura / Q000293:injuries; D010996:Pleural Effusion / Q000175:diagnosis / Q000209:etiology*; D010997:Pleural Neoplasms / Q000150:complications / Q000175:diagnosis; D012216:Rheumatic Diseases / Q000150:complications / Q000175:diagnosis; D014396:Tuberculosis, Pleural / Q000175:diagnosis