There is no guarantee that all tumors will disappear completely after radiotherapy for nasopharyngeal cancer. The 5-year survival rate of nasopharyngeal cancer after radiotherapy is around 80%, which means that there is still a small portion of patients who may have the possibility of recurrence or even distant metastasis after radiotherapy.
Nasopharyngeal cancer belongs to malignant tumors of nasopharynx, with high degree of malignancy, and mostly occurs in the parietal wall and lateral wall of nasopharynx. Early symptoms of nasopharyngeal cancer are often hidden, and patients may only have mild nasal congestion, headache, blood in snot, etc., which may be delayed in treatment due to lack of timely detection in the early stage. Therefore, when nasopharyngeal cancer is found, a large part of patients already belong to middle or late stage.
For radiotherapy treatment of nasopharyngeal cancer, of course, the earlier the treatment, the better the effect, the higher the 5-year survival rate and the higher the probability of complete disappearance. The more advanced the case is, the more difficult it is to treat, and the higher the probability of recurrence and distant metastasis.
Therefore, if patients are considered to have nasopharyngeal cancer, it is recommended that they go to regular hospitals in time and make individualized treatment plans according to the examination.