Lung cancer symptoms - coughing up blood or bloody sputum (hemoptysis)
Hemoptysis is coughing up blood or bloddy sputum that originates in the lungs or bronchial tubes. It can have various causes and can be the symptom of several disorders, including lung cancer.
Learn about hemoptysis as a symptom of lung cancer
Coughing up blood (MedlinePlus)
Signs and symptoms: Coughing up blood; hemoptysis (UCLA Lung Cancer Program)
Hemoptysis: diagnosis and management (American Family Physician)