The spitting of black sputum by lung cancer patients is one of the manifestations of lung cancer symptoms. The cough is accompanied by different sputum manifestations, such as blood in the sputum.
Tumor necrosis, capillary breakage will have a small amount of bleeding, mixed with sputum, intermittent or intermittent found.
More lung cancer patients are seen for blood in sputum and black sputum
Oral consultation is recommended for the presence of blood blisters in the mouth or inflammation of their throat.
Smear or bacterial culture can rule out the possibility of fungal or bacterial infections, and it is usually possible to detect mycelium or positive bacterial culture
Inquire about the medical history, whether the patient has a history of smoking, work environment, special jobs, etc.