Coughing up blood (hemoptysis) is the condition of spitting up blood during and after coughing, blood coming out through the mouth or nose due to damage from the larynx down. Diagnosis of coughing up blood due to cancer is usually simple, however, it is necessary to determine the severity of coughing up blood to be able to handle it promptly and quickly, avoiding the risk of death due to acute blood loss and acute respiratory failure due to obstruction or choking on the airway.