NPC is one of multiple tumors, the highest incidence of Guangdong, Hunan, Fujian, Guangxi and other provinces, autonomous regions, followed by nasopharyngeal cancer incidence rate in our head and neck malignant neoplasms of the first.Age of onset of the disease mostly in the40-60years old, more men than women.Common cause of the current NPC has not yet led to clear, may be related to the following factors.
NPC because of a commongenetic factors
The disease susceptibility of certain ethnic and familial aggregation and genetic markers and immune related.
Two common causes nasopharyngeal cancer,viral factors
Mainly forEBvirus.NPC patients can be detected in serumEBvirus antibody titers increased with disease development.From cancer of the lymph node biopsy in the mother cell cultivate isolatedEBvirus, animal studies, observed thatEBvirus can cause malignant change.
Three common causes nasopharyngeal cancer,environmental factors
Chemicals, such as multi-ring torch type, nitrite and trace elements in sickle glue and other occurrence of NPC have some contact.