Most head and neck cancers begin in the cells that line the mucosal surfaces in the head and neck area, e.g., mouth, nose, and throat. Mucosal surfaces are moist tissues lining hollow organs and cavities of the body open to the environment. Normal mucosal cells look like scales (squamous) under the microscope, so head and neck cancers are often referred to as squamous cell carcinomas. Some head and neck cancers begin in other types of cells.
Tobacco (including smokeless tobacco, sometimes called “chewing tobacco” or “snuff”) and alcohol use are the most important risk factors for head and neck cancers, particularly those of the oral cavity, oropharynx, hypopharynx, and larynx. Eighty-five percent of head and neck cancers are linked to tobacco use. People who use both tobacco and alcohol are at greater risk for developing these cancers than people who use either tobacco or alcohol alone.
Head and neck cancers account for approximately 3 to 5 percent of all cancers in the United States. These cancers are more common in men and in people over age 50. It is estimated that about 12,000 men and 9,000 women will develop these cancers each year. If you are a smoker, or know someone who is, it's important that you are aware of the following symptoms and visit your physician as soon as you see any of them develop.
Symptoms of several head and neck cancer sites include a lump or sore that does not heal, a sore throat that does not go away, difficulty swallowing, and a change or hoarseness in the voice. Other symptoms may include the following:
- Oral cavity. A white or red patch on the gums, tongue, or lining of the mouth; a swelling of the jaw that causes dentures to fit poorly or become uncomfortable; and unusual bleeding or pain in the mouth.
- Nasal cavity and sinuses. Sinuses that are blocked and do not clear, chronic sinus infections that do not respond to treatment with antibiotics, bleeding through the nose, frequent headaches, swelling or other trouble with the eyes, pain in the upper teeth, or problems with dentures.
- Salivary glands. Swelling under the chin or around the jawbone; numbness or paralysis of the muscles in the face; or pain that does not go away in the face, chin, or neck.
- Oropharynx and hypopharynx. Ear pain.
- Nasopharynx. Trouble breathing or speaking, frequent headaches, pain or ringing in the ears, or trouble hearing.
- Larynx. Pain when swallowing, or ear pain.
- Metastatic squamous neck cancer. Pain in the neck or throat that does not go away.
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