Esophageal Cancer Screening

Although there are no standard or routine screening tests for esophageal cancer, the following tests are being used or studied to screen for it: 

Esophagoscopy 

A procedure to look inside the esophagus to check for abnormal areas. An esophagoscope is inserted through the mouth or nose and down the throat into the esophagus. An esophagoscope is a thin, tube-like instrument with a light and a lens for viewing. It may also have a tool to remove tissue samples, which are checked under a microscope for signs of cancer. 

Biopsy

The removal of cells or tissues so they can be viewed under a microscope by a pathologist to check for signs of cancer. Taking biopsy samples from several different areas in the lining of the lower part of the esophagus may detect early Barrett esophagus. This procedure may be used for patients who have risk factors for Barrett esophagus.

Brush cytology

A procedure in which cells are brushed from the lining of the esophagus and viewed under a microscope to see if they are abnormal. This may be done during an esophagoscopy.

Balloon cytology

A procedure in which cells are collected from the lining of the esophagus using a deflated balloon that is swallowed by the patient. The balloon is then inflated and pulled out of the esophagus. Esophageal cells on the balloon are viewed under a microscope to see if they are abnormal.

Chromoendoscopy

A procedure in which a dye is sprayed onto the lining of the esophagus during esophagoscopy. Increased staining of certain areas of the lining may be a sign of early Barrett esophagus.

Fluorescence spectroscopy

A procedure that uses a special light to view tissue in the lining of the esophagus. The light probe is passed through an endoscope and shines on the lining of the esophagus. The light given off by the cells lining the esophagus is then measured. Malignant tissue gives off less light than normal tissue.

Clinical trials for esophageal cancer screening

Screening tests for esophageal cancer are being studied in clinical trials.

Information about clinical trials supported by NCI can be found on NCI’s clinical trials search webpage. Clinical trials supported by other organizations can be found on the ClinicalTrials.gov website.

Decisions about screening tests can be difficult. Not all screening tests are helpful, and most have risks. Before having any screening test, you may want to discuss the test with your doctor. It is important to know the risks of the test and whether it has been proven to reduce the risk of dying from cancer.

Finding esophageal cancer may not improve health or help a person live longer.

Screening may not improve your health or help you live longer if you have advanced esophageal cancer or if it has already spread to other places in your body.

Some cancers never cause symptoms or become life-threatening, but if found by a screening test, the cancer may be treated. It is not known if treatment of these cancers will help you live longer than if no treatment were given, and treatments for cancer may have serious side effects.

The risks of esophageal cancer screening tests include:

False-negative test results can occur

Screening test results may appear to be normal even though esophageal cancer is present. A person who receives a false-negative test result (one that shows there is no cancer when there really is) may delay seeking medical care even if there are symptoms.

False-positive test results can occur

Screening test results may appear to be abnormal even though no cancer is present. A false-positive test result (one that shows there is cancer when there really isn't) can cause anxiety and is usually followed by more tests (such as biopsy), which also have risks.

Side effects may be caused by the test itself. There are rare but serious side effects that may occur with esophagoscopy and biopsy. These include:

• a small hole (puncture) in the esophagus
• problems with breathing
• heart attack
• passage of food, water,
• stomach acid, or 
• vomit into the airway
• severe bleeding that may need to be treated in a hospital