Bleeding from the nose may seem trivial to many people, but it can be a big deal if there is repeated bloody discharge from the nose, light pink nasal discharge, or blood in the sputum. This is because this condition, which is medically known as returning aspirated snot with blood, is probably an early sign of nasopharyngeal cancer. Nasopharyngeal cancer is the most prevalent malignant tumor in the head and neck, and it is easily misdiagnosed in the early stage. Because of the hidden location of nasopharynx and the lack of specific symptoms in early stage, and the rich lymphatic vessels in nasopharynx provide convenient conditions for cancer cells to metastasize. However, it does not mean that having aspiration with blood is nasopharyngeal cancer. A simple way to distinguish cancerous aspiration with blood is as follows: bleeding caused by dryness in the nasal cavity or nasopharynx often does not last long, while bleeding in nasopharyngeal cancer is repeated and continuous, with aggravating manifestations, accompanied by tinnitus, hearing loss, ear blockage and other symptoms. In this case, a nasopharyngoscopy can be done at the hospital to make a judgment at a glance. In addition, a rapidly growing hard lump in the neck may also indicate nasopharyngeal cancer. Because, the internal structure of the nose is complicated, and the lymphatic vessels inside the nose are like a pathway to the outside world, making cancer cells in the neck near the back of the earlobe, forming enlarged lymph nodes in the neck. If the hard lump grows to the size of quail egg in a short period of time, it is better to go to hospital for examination in time. Another neglected symptom of nasopharyngeal carcinoma is migraine. If the above symptoms appear along with headache, cancer cells may have metastasized into the skull, and the headache in early stage is usually intermittent, while in late stage, it appears as persistent and severe headache. At this time, patients cannot just go to neurology for headache treatment, but better to do skull base photo or CT scan cat. It is important to note that although there is no medical research to prove that persistent rhinitis can lead to nasopharyngeal cancer, it does not mean that rhinitis has nothing to do with nasopharyngeal cancer. EBV, one of the causes of nasopharyngeal cancer, can also lead to upper respiratory tract infections, which in turn can lead to rhinitis symptoms. Therefore, it is best for patients with rhinitis to go to the hospital for EBV serologic testing for early detection of cancer. ENT uses endoscopic visual inspection of the nasopharynx and 3D CT for early detection of nasopharyngeal cancer and precancerous lesions in the nasal cavity.