Summary

Key Points

• Hypopharyngeal cancer is a disease in which malignant (cancer) cells form in the tissues of the hypopharynx.
• Use of tobacco products and heavy drinking can affect the risk of developing hypopharyngeal cancer.
• Signs and symptoms of hypopharyngeal cancer include a sore throat and ear pain.
• Tests that examine the throat and neck are used to help detect (find) and diagnose hypopharyngeal cancer.
• Certain factors affect prognosis (chance of recovery) and treatment options.

Hypopharyngeal cancer is a disease in which malignant (cancer) cells form in the tissues of the hypopharynx.

The hypopharynx is the bottom part of the pharynx (throat). The pharynx is a hollow tube about 5 inches long that starts behind the nose, goes down the neck, and ends at the top of the trachea (windpipe) and esophagus (the tube that goes from the throat to the stomach). Air and food pass through the pharynx on the way to the trachea or the esophagus.

Most hypopharyngeal cancers form in squamous cells, the thin, flat cells lining the inside of the hypopharynx. The hypopharynx has 3 different areas. Cancer may be found in 1 or more of these areas.

Hypopharyngeal cancer is a type of head and neck cancer.

Risk Factors

Use of tobacco products and heavy drinking can affect the risk of developing hypopharyngeal cancer.

Anything that increases your risk of getting a disease is called a risk factor. Having a risk factor does not mean that you will get cancer; not having risk factors doesn’t mean that you will not get cancer. Talk with your doctor if you think you may be at risk. Risk factors include the following:

• Smoking tobacco.
• Chewing tobacco.
• Heavy alcohol use.
• Eating a diet without enough nutrients.
• Having Plummer-Vinson syndrome.

Screening and Detection

• Tests that examine the throat and neck are used to help detect (find) and diagnose hypopharyngeal cancer.

The following tests and procedures may be used:

• Physical exam of the throat: An exam in which the doctor feels for swollen lymph nodes in the neck and looks down the throat with a small, long-handled mirror to check for abnormal areas.
• CT scan (CAT scan): A procedure that makes a series of detailed pictures of areas inside the body, taken from different angles. The pictures are made by a computer linked to an x-ray machine. A dye may be injected into a vein or swallowed to help the organs or tissues show up more clearly. This procedure is also called computed tomography, computerized tomography, or computerized axial tomography.
• PET scan (positron emission tomography scan): A procedure to find malignant tumor cells in the body. A small amount of radioactive glucose (sugar) is injected into a vein. The PET scanner rotates around the body and makes a picture of where glucose is being used in the body. Malignant tumor cells show up brighter in the picture because they are more active and take up more glucose than normal cells do. A PET scan and CT scan may be done at the same time. This is called a PET-CT.
• MRI (magnetic resonance imaging): A procedure that uses a magnet, radio waves, and a computer to make a series of detailed pictures of areas inside the body. This procedure is also called nuclear magnetic resonance imaging (NMRI).
• Bone scan : A procedure to check if there are rapidly dividing cells, such as cancer cells, in the bone. A very small amount of radioactive material is injected into a vein and travels through the bloodstream. The radioactive material collects in the bones and is detected by a scanner.
• Barium esophagogram: An x-ray of the esophagus. The patient drinks a liquid that contains barium (a silver-white metallic compound). The liquid coats the esophagus and x-rays are taken.
• Endoscopy : A procedure used to look at areas in the throat that cannot be seen with a mirror during the physical exam of the throat. An endoscope (a thin, lighted tube) is inserted through the nose or mouth to check the throat for anything that seems unusual. Tissue samples may be taken for biopsy.
• Esophagoscopy : A procedure to look inside the esophagus to check for abnormal areas. An esophagoscope (a thin, lighted tube) is inserted through the mouth or nose and down the throat into the esophagus. Tissue samples may be taken for biopsy.
• Bronchoscopy : A procedure to look inside the trachea and large airways in the lung for abnormal areas. A bronchoscope (a thin, lighted tube) is inserted through the nose or mouth into the trachea and lungs. Tissue samples may be taken for biopsy.
• Biopsy: The removal of cells or tissues so they can be viewed under a microscope to check for signs of cancer.

Signs and Symptoms

Signs and symptoms of hypopharyngeal cancer include a sore throat and ear pain.

These and other signs and symptoms may be caused by hypopharyngeal cancer or by other conditions. Check with your doctor if you have any of the following:

• A sore throat that does not go away.
• Ear pain.
• A lump in the neck.
• Painful or difficult swallowing.
• A change in voice.

Treatment Options

There are different types of treatment for patients with hypopharyngeal cancer.

Different types of treatment are available for patients with hypopharyngeal cancer. Some treatments are standard (the currently used treatment), and some are being tested in clinical trials. A treatment clinical trial is a research study meant to help improve current treatments or obtain information on new treatments for patients with cancer. When clinical trials show that a new treatment is better than the standard treatment, the new treatment may become the standard treatment. Patients may want to think about taking part in a clinical trial. Some clinical trials are open only to patients who have not started treatment.

Three types of standard treatment are used:

Surgery

Surgery (removing the cancer in an operation) is a common treatment for all stages of hypopharyngeal cancer. The following surgical procedures may be used:

Laryngopharyngectomy: Surgery to remove the larynx (voice box) and part of the pharynx (throat).

Partial laryngopharyngectomy: Surgery to remove part of the larynx and part of the pharynx. A partial laryngopharyngectomy prevents loss of the voice.

Neck dissection: Surgery to remove lymph nodes and other tissues in the neck.

Even if the doctor removes all the cancer that can be seen at the time of the surgery, some patients may be given chemotherapy or radiation therapy after surgery to kill any cancer cells that are left. Treatment given after the surgery, to lower the risk that the cancer will come back, is called adjuvant therapy.

Radiation therapy

Radiation therapy is a cancer treatment that uses high-energy x-rays or other types of radiation to kill cancer cells. There are two types of radiation therapy. External radiation therapy uses a machine outside the body to send radiation toward the cancer. Internal radiation therapy uses a radioactive substance sealed in needles, seeds, wires, or catheters that are placed directly into or near the cancer. The way the radiation therapy is given depends on the type and stage of the cancer being treated.

Radiation therapy may be more effective in patients who have stopped smoking before beginning treatment. External radiation therapy to the thyroid or the pituitary gland may change the way the thyroid gland works. The thyroid gland may be tested before and after therapy to make sure it is working properly.

Chemotherapy

Chemotherapy is a cancer treatment that uses drugs to stop the growth of cancer cells, either by killing the cells or by stopping the cells from dividing. When chemotherapy is taken by mouth or injected into a vein or muscle, the drugs enter the bloodstream and can reach cancer cells throughout the body (systemic chemotherapy). When chemotherapy is placed directly into the cerebrospinal fluid, an organ, or a body cavity such as the abdomen, the drugs mainly affect cancer cells in those areas (regional chemotherapy). The way the chemotherapy is given depends on the type and stage of the cancer being treated.

Chemotherapy may be used to shrink the tumor before surgery or radiation therapy. This is called neoadjuvant chemotherapy.

See Drugs Approved for Head and Neck Cancer for more information. (Hypopharyngeal cancer is a type of head and neck cancer.)

New types of treatment are being tested in clinical trials.

Information about clinical trials is available from the NCI Web site.

Patients may want to think about taking part in a clinical trial.

For some patients, taking part in a clinical trial may be the best treatment choice. Clinical trials are part of the cancer research process. Clinical trials are done to find out if new cancer treatments are safe and effective or better than the standard treatment.

Many of today’s standard treatments for cancer are based on earlier clinical trials. Patients who take part in a clinical trial may receive the standard treatment or be among the first to receive a new treatment.

Patients who take part in clinical trials also help improve the way cancer will be treated in the future. Even when clinical trials do not lead to effective new treatments, they often answer important questions and help move research forward.

Patients can enter clinical trials before, during, or after starting their cancer treatment.

Some clinical trials only include patients who have not yet received treatment. Other trials test treatments for patients whose cancer has not gotten better. There are also clinical trials that test new ways to stop cancer from recurring (coming back) or reduce the side effects of cancer treatment.

Clinical trials are taking place in many parts of the country. See the Treatment Options section that follows for links to current treatment clinical trials. These have been retrieved from NCI’s listing of clinical trials.

Follow-up tests may be needed.

Some of the tests that were done to diagnose the cancer or to find out the stage of the cancer may be repeated. Some tests will be repeated in order to see how well the treatment is working. Decisions about whether to continue, change, or stop treatment may be based on the results of these tests.

Some of the tests will continue to be done from time to time after treatment has ended. The results of these tests can show if your condition has changed or if the cancer has recurred (come back). These tests are sometimes called follow-up tests or check-ups.

For hypopharyngeal cancer, follow-up to check for recurrence should include careful head and neck exams once a month in the first year after treatment ends, every 2 months in the second year, every 3 months in the third year, and every 6 months thereafter.