<unk>  is the coughing up of blood or blood-stained mucus from the bronchi, larynx, trachea, or lungs. In other words, it is the airway bleeding. This can occur with lung cancer, infections such as tuberculosis, bronchitis, or pneumonia, and certain cardiovascular conditions.<unk>  is considered massive at . In such cases, there are always severe injuries. The primary danger comes from choking, rather than blood loss.
Hemoptysis
Nosebleed
Chronic cough
Subcutaneous emphysema
Hydrothorax
Air bronchogram
Nasal congestion
Post-nasal drip