Bronchogenic carcinoma heralded by hemoptysis and ignored because of negative chest x-ray results.
D002283:Carcinoma, Bronchogenic; D006469:Hemoptysis / Q000209:etiology*; D006801:Humans; D008175:Lung Neoplasms; D013909:Thorax; D014965:X-Rays
HEMOPTYSIS/etiology and pathogenesis; LUNG NEOPLASMS/manifestations