title: Hemoptysis.
abstract: Hemoptysis is an alarming symptom that should not be dismissed lightly. A thorough evaluation will lead to the correct diagnosis in 80 to 90 percent of cases. Surgery is occasionally necessary where life-threatening hemorrhage is present but, more commonly, appropriate therapy can only be determined when the etiology is discovered, thus mandating a careful, thorough diagnostic search.
mesh_terms: D000328:Adult; D001999:Bronchoscopy; D002318:Cardiovascular Diseases / Q000150:complications; D002648:Child; D006469:Hemoptysis / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy; D006801:Humans; D007154:Immune System Diseases / Q000150:complications; D008171:Lung Diseases / Q000150:complications; D008175:Lung Neoplasms / Q000150:complications