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The throat pharynx is a muscular tube that runs from the back of your nose down into your neck. It contains three sections: the nasopharynx, oropharynx and laryngopharynx, which is also called the hypopharynx. Nasopharyngeal nay-zoh-fuh-RIN-jee-ul carcinoma is cancer that occurs in the nasopharynx, which is located behind your nose and above the back of your throat. Nasopharyngeal carcinoma is rare in the United States.
It occurs much more frequently in other parts of the world — specifically Southeast Asia. Nasopharyngeal carcinoma is difficult to detect early. That's probably because the nasopharynx isn't easy to examine and symptoms of nasopharyngeal carcinoma mimic those of other, more-common conditions. Treatment for nasopharyngeal carcinoma usually involves radiation therapy, chemotherapy or a combination of the two.
You can work with your doctor to determine the exact approach depending on your particular situation. In its early stages, nasopharyngeal carcinoma may not cause any symptoms. Possible noticeable symptoms of nasopharyngeal carcinoma include:. Early nasopharyngeal carcinoma symptoms may not always prompt you to see your doctor.
However, if you notice any unusual and persistent changes in your body that don't seem right to you, such as unusual nasal congestion, see your doctor. Cancer begins when one or more genetic mutations cause normal cells to grow out of control, invade surrounding structures and eventually spread metastasize to other parts of the body.
In nasopharyngeal carcinomas, this process begins in the squamous cells that line the surface of the nasopharynx. Exactly what causes the gene mutations that lead to nasopharyngeal carcinoma isn't known, though factors, such as the Epstein-Barr virus, that increase the risk of this cancer have been identified.
However, it isn't clear why some people with all the risk factors never develop cancer, while others who have no apparent risk factors do. Researchers have identified some factors that appear to increase your risk of developing nasopharyngeal carcinoma, including:. Cancer that spreads to other areas of the body.
Nasopharyngeal carcinoma frequently spreads metastasizes beyond the nasopharynx. Most people with nasopharyngeal carcinoma have regional metastases.
That means cancer cells from the initial tumor have migrated to nearby areas, such as lymph nodes in the neck. Cancer cells that spread to other areas of the body distant metastases most commonly travel to the bones, lungs and liver.
No sure way exists to prevent nasopharyngeal carcinoma. However, if you're concerned about your risk of nasopharyngeal carcinoma, you may consider avoiding habits that have been associated with the disease. For instance, you may choose to cut back on the amount of salt-cured foods you eat or avoid these foods altogether.
In the United States and in other areas where the disease is rare, routine screening for nasopharyngeal carcinoma isn't done. But in areas of the world where nasopharyngeal carcinoma is much more common — for instance, in some areas of China — doctors may offer screenings to people thought to be at high risk of the disease.
Screening may involve blood tests to detect the Epstein-Barr virus. Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
This content does not have an English version. This content does not have an Arabic version. Request an appointment. Overview Parts of the throat pharynx Open pop-up dialog box Close. Parts of the throat pharynx The throat pharynx is a muscular tube that runs from the back of your nose down into your neck.
Request an Appointment at Mayo Clinic. Share on: Facebook Twitter. Show references Flint PW, et al. Benign and malignant tumors of the nasopharynx. Philadelphia, Pa. Accessed July 8, Head and neck cancers.
Fort Washington, Pa. Accessed April 2, Nasopharyngeal cancer treatment PDQ. National Cancer Institute. Nasopharyngeal cancer: Treatment options. Hui EP, et al. Epidemiology, etiology and diagnosis of nasopharyngeal carcinoma. Rochester, Minn. Treatment of early locoregionally advanced nasopharyngeal carcinoma. Dry mouth or xerostomia. Mayo Clinic Marketplace Check out these best-sellers and special offers on books and newsletters from Mayo Clinic.
The throat pharynx is a muscular tube that runs from the back of your nose down into your neck. It contains three sections: the nasopharynx, oropharynx and laryngopharynx, which is also called the hypopharynx. Nasopharyngeal nay-zoh-fuh-RIN-jee-ul carcinoma is cancer that occurs in the nasopharynx, which is located behind your nose and above the back of your throat. Nasopharyngeal carcinoma is rare in the United States. It occurs much more frequently in other parts of the world — specifically Southeast Asia.
Dermatomyosite du sujet âgé: étude de 4 observations dans le sud tunisien
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Patients were treated with either primary chemotherapy epirubicin and cisplatin followed by radiotherapy or concomitant radiochemotherapy five fluorouracil and cisplatin. Sixty-three percent of patients had undifferentiated tumors. Sixty-six percent had locally advanced tumor. Late complications were dominated by dry mouth and endocrine disorders.