The age of onset of nasopharyngeal carcinoma and what is the cause of nasopharyngeal carcinoma

The peak incidence of nasopharyngeal carcinoma is 40-60 years old, nasopharyngeal carcinoma is rare in childhood, with the increase of age, the incidence rate is gradually increasing, it begins to rise at the age of 20-40, reaches the peak of incidence at the age of 40-60, and then the incidence begins to decline gradually. The incidence of nasopharyngeal carcinoma in men and women is also different, and the ratio of males to females is about (2-3):1, that is, men have 2-3 times more nasopharyngeal cancer than women.

Nasopharyngeal cancer also has obvious racial differences, especially in yellow people, such as China, Indonesia, Malaysia, etc., while white people rarely develop nasal cancer. The incidence of nasopharyngeal cancer in China is relatively high in the south, such as Guangdong, Guangxi, Hunan and other provinces, and the incidence of nasopharyngeal cancer is gradually decreasing from south to north.

Generally after the age of 40, sudden nosebleeds are generally not nasopharyngeal cancer, nosebleeds are one of the symptoms of nasopharyngeal cancer, but generally last for a long time, headache, swallowing discomfort, etc.

If you suddenly have a large nosebleed, you will have to go to the hospital for a check-up, and leukemia will also have a large number of nosebleeds. But under normal circumstances, no, don't worry too much, it's better not to go to the hospital to have a look.

Nasopharyngeal carcinoma is one of the most common malignant tumors in China, mostly found in Guangdong, Guangxi, Hunan, Fujian, Jiangxi and other provinces in southern China, with a male incidence rate of 2 3 times that of women, and the reported age distribution of cases in China is 3 90 years old, but 30 to 50 years old is the high incidence age area.

Nasopharyngeal cancer is also quite complicated. I have a friend who has nasopharyngeal cancer, and it has been many times before and after but it has no effect. Later, I found Adventist Health.

Proton** is the most advanced, most accurate, and effective radiotherapy method suitable for a variety of tumors in the world. Proton** is also known as "proton line**" and "proton knife", and like the "gamma knife" and "tomo knife" we have heard of, this is not a "knife" in the real sense, but actually a form of radiotherapy.

Proton** uses ionizing radiation generated by proton acceleration to enter the body at an extremely high speed, guided by a specially shaped device, and finally reaches the targeted tumor site, minimizing damage to surrounding healthy tissue. Protons are commonly used for cancers in critical parts of the body.

Nasopharyngeal carcinoma is a malignant tumor of the nasopharynx, which occurs on all continents in the world, and is one of the regions with a relatively high incidence in China, and nasopharyngeal carcinoma is mostly male. There are many reasons for the occurrence of nasopharyngeal carcinoma, which are mainly closely related to the following factors:

Clause. 1. Genetic factors, in general, nasopharyngeal carcinoma is familial cluster.

Clause. Second, it is related to race, and related to the susceptibility of race, nasopharyngeal cancer is mainly more common in yellow people, and viral infections can also cause nasopharyngeal cancer, such as Epstein-Barr virus.

Clause. 3. Environmental factors and trace elements can be one of the causes of nasal cancer.

Further research and investigation are needed on the exact and related factors of nasopharyngeal carcinoma.

The hair of nasopharyngeal carcinoma is multifaceted. Years of clinical observation and experimental studies have shown that the following factors are closely related to the occurrence of nasopharyngeal carcinoma.

1.Genetic factors

1) Familial agglomeration Many patients with nasopharyngeal carcinoma have a family history of cancer. Nasopharyngeal carcinoma tends to occur in both vertical and horizontal families.

2) Racial susceptibility Nasopharyngeal carcinoma is mainly seen in yellow people and less common in white people; Ethnic groups with a high incidence of disease who have emigrated elsewhere (or resettled abroad) still have a high incidence of disease among their descendants.

3) Regional concentration Nasopharyngeal carcinoma mainly occurs in the five southern provinces of China, namely Guangdong, Guangxi, Hunan, Fujian and Jiangxi, accounting for the first place in the local head and neck malignant tumors. Southeast Asian countries are also high-risk areas.

4) Susceptibility genes In recent years, molecular genetic studies have found that the chromosomal changes in nasopharyngeal carcinoma tumor cells are mainly chromosome 17, and the discovery of multichromosomal heterozygous deletion regions (1p, 9p, 9q, 11q, 13q, 14q and 16q) in nasopharyngeal carcinoma tumor cells may indicate the existence of multiple tumor tumor suppressor gene mutations in the development of nasopharyngeal carcinoma.

2.Viral infections

In 1964, Epstein and Barr first established a passaging-ready lymphoblastic cell line from biopsy tissue from African childhood lymphoma (Burkitt lymphoma). Herpetic virus particles can be seen on electron microscopy. Because it has different properties from other members of the herpesvirus family, it is named Epstein-Barr virus, or Epstein-Barr virus.

Virus-laden lymphoblastoid cell lines can be isolated from nasopharyngeal carcinoma tissues, and a few virus particles can be seen under electron microscopy. Immunological and biochemical studies have confirmed that EBV is closely related to nasopharyngeal carcinoma. The dynamic change and monitoring of EBV antibody titers can be used as indicators for clinical diagnosis, prognosis estimation and follow-up monitoring.

In addition to Epstein-Barr virus, other viruses, such as coronavirus, are also thought to be involved in the occurrence and development of nasopharyngeal carcinoma.

3.Environmental factors

There are reports that the mortality rate of nasopharyngeal cancer in Chinese who have emigrated abroad gradually decreases with the number of generations inherited. On the other hand, Caucasians born in Southeast Asia have an increased risk of nasopharyngeal cancer. These suggest that environmental factors may play an important role in the pathogenesis of nasopharyngeal carcinoma.

Epidemiological investigation found that babies in areas with a high incidence of nasopharyngeal carcinoma in Guangdong Province had salted fish in their first food contact after weaning. In addition, dried fish and Guangdong cured meat are also associated with the incidence of nasopharyngeal cancer. These foods contain nitrosamine precursor nitrite during the curing process.

When the pH of human gastric juice is 1 3, nitrosamine compounds can be synthesized with secondary amines in cells with nitrite (which needs to be reduced to nitrite by cells). These substances have a strong carcinogenic effect.

Excessive levels of certain trace elements, such as nickel, in the environment may also induce nasopharyngeal cancer.

Hello! The cause of nasopharyngeal carcinoma is still unknown. The disease may be closely related to genetic, viral, and environmental factors. But don't worry, allergic rhinitis won't cause nasopharyngeal cancer!

1. Genetic factors: The incidence of nasopharyngeal carcinoma is obviously regional, with obvious ethnic and familial clustering. Nasopharyngeal carcinoma is more common in yellow people, and it is rare for white people to suffer from this disease.

2. Virus factors: More than 90% of people in China have been infected with Epstein-Barr virus when they were young, and Epstein-Barr virus infection is very common.

3. Environmental factors: Residents in high-incidence areas are addicted to local salted fish, cured meat, and pickled vegetables, and the content of nitrite in these foods is particularly high and contains a certain amount of nitrosamines and their various compounds.

The survey found that the nickel content in the soil, water and rice in the areas with a high incidence of nasopharyngeal cancer in Guangdong Province was higher than that in other areas, and the nickel content in the hair of nasopharyngeal cancer patients was also high. Diets high in nickel may be a contributing factor to the development of nasopharyngeal carcinoma. Studies have confirmed that high nickel can promote nitrosamines-induced nasopharyngeal carcinoma in laboratory animals.

Residents in areas with a high incidence of nasopharyngeal cancer also have low selenium.

When tumor cells appear in the human body, the body's defense system mobilizes selenium to act on tumor cells, and the mitochondria in tumor cells are one of the main sites of selenium. Selenium malt can effectively inhibit tumors, effectively improve cellular immunity, humoral immunity and non-specific phagocytosis function, so as to achieve the effect of balancing the body. So as to achieve the effect of preventing cancer tumors.

1. Environmental factors: In daily life, due to work, diet, life and other factors, people are connected to a variety of harmful substances through breathing, contact, etc., and then there is the weakness of their own physique, which will cause certain damage to the body, resulting in the occurrence of nasopharyngeal cancer.

2 Viruses: Studies have shown that the occurrence of nasopharyngeal carcinoma is related to the infection of some viruses, mainly Epstein-Barr virus, but it is not the only virus that can induce nasopharyngeal carcinoma in humans.

3 Genetics: The survey found that there is a certain aggregation phenomenon between races and families, and it is speculated that the occurrence of nasopharyngeal carcinoma is related to heredity.

Nasopharyngeal carcinoma is a malignant tumor that occurs on the roof and side wall of the nasopharyngeal cavity. It is one of the high-incidence malignant tumors in China, and the incidence rate is the first malignant tumor of the ear, nose and throat. The incidence of nasopharyngeal carcinoma has a lot to do with environmental factors.

Pollution of the living environment and air pollution can induce nasopharyngeal cancer. Dust, fumes, chemicals, eating habits, genetic factors, and so on in the occupational environment are all related.

The incidence of nasopharyngeal carcinoma occurs sparingly. The incidence of nasopharyngeal carcinoma is more regional. The peak age of onset is between 30 and 50 years old.

Eating salted fish, especially at an early age, increases the risk of nasopharyngeal cancer. There have been many reports that nasopharyngeal carcinoma is associated with eating more salted fish. The younger you are, the more likely you are to develop nasopharyngeal cancer, and the higher the risk.

Eating pickled foods such as dried plum vegetables and tangerine peel plums in the south can also increase the risk of nasopharyngeal cancer. If you have such a diet, you have a high chance of getting nasopharyngeal cancer, in order to prevent the occurrence of cancer.

Hello, nasopharyngeal carcinoma occurs as a malignant tumor on the top and side wall of the nasopharyngeal cavity. Common clinical symptoms include nasal congestion, blood in the runny nose, ear congestion, hearing loss, diplopia and headache. Most nasopharyngeal carcinoma has moderate sensitivity to radiation**, which is the preferred method for nasopharyngeal cancer.

The diet must be rich in protein, vitamins, amino acids and other nutrients, and choose more foods that clear away heat and detoxify, relieve fire and cold, and dissolve phlegm and disperse foods, such as kelp, seaweed, seaweed, jellyfish, etc. It is recommended that patients take the body for a long time before and after **Selenium Weikang Chewable Tablets can effectively improve physical resistance, enhance physical fitness, have a great effect on the recovery of the disease, reduce pain, and prevent patients from a series of toxins produced in the process, so as to achieve the purpose of anti-cancer. Hope this advice can help you and I wish you a speedy **!!

The ** of nasopharyngeal cancer is not very clear, but so far, it is believed that the more reliable factors for the occurrence of epstein-Barr virus infection, the second is genetic background, genetic factors, and the third is diet, which may be the reason for the high incidence of nasopharyngeal cancer.