Hemoptysis is an early sign of lung cancer?

Sputum is a multi-component substance. Its high fluid content is the result of epithelial ion and water transport, and its macromolecules are mainly derived from leakage of blood or products of locally secreted cells. Hemoptysis is not only an early sign of lung cancer, but also an early sign of tuberculosis. Cough up blood. If the patient has nasal suction before coughing up blood, nosebleed, be alert for nasopharyngeal problems. In addition, some upper airway problems, such as bleeding gums, posterior nasal bleeding, throat bleeding, may also cough up blood sputum.