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Wednesday, June 19, 2013
Barrett's esophagus is a condition in which the tissue lining of the esophagus, the tube connecting the mouth to the stomach, becomes damaged by acid from the stomach. This damage causes tissue that is similar to the lining of the small intestine to replace the normal tissue lining of the esophagus. Barrett's esophagus is a silent condition because there are no signs or symptoms associated with it. However, is commonly found in people who have gastroesophageal reflux disease (GERD). Barrett's esophagus is an area of ongoing research because it is a risk factor for a specific type of esophageal cancer called esophageal adenocarcinoma.
Anytime you eat, food passes from the mouth to the throat and eventually to the stomach via the esophagus. The act of swallowing causes the muscles at both ends of the esophagus (sphincters) to relax, which allows food or drink to reach the stomach. Once the food or drink is in the stomach, the muscles close quickly in order to prevent these materials from leaking back into the esophagus and mouth.
Gastroesophageal reflux (GER) occurs when the lower muscle of the esophagus opens randomly or does not close properly, and some of the stomach's contents rise into the esophagus and mouth. People with GER may taste food or fluid in the back of the mouth. They may also experience heartburn (acid indigestion), which is marked by a burning sensation in the chest or throat. It is normal for this to happen occasionally; however, if it happens more than twice a week it may be considered to be gastroesophageal reflux disease (GERD). GERD can be a serious condition because it can often lead to other health problems such as bleeding ulcers and Barrett's esophagus if left untreated. For more information on GERD visit the NetWellness exclusive: Gastroesophageal Reflux Disease (GERD) Overview. In certain individuals, GERD causes Barrett's esophagus if the leaked stomach contents damage the lining of the esophagus. Researchers are continuing to investigate the causes of Barrett's esophagus, but at this time GERD is considered to be a strong risk factor.
Results from different studies vary, but Barrett's esophagus probably only affects about one or two percent of adults in the United States. Most people with the diagnosis are age 50 or older, and men are twice as likely to develop it as women. In addition, Caucasian men are more likely to be affected than men of other races. People who have had GERD for an extended period of time are more likely to have Barrett's esophagus than those who don't have GERD. However, it is possible to develop Barrett's esophagus and not have GERD. Being overweight or obese also increases the risk of Barrett's esophagus.
Barrett's esophagus is diagnosed using an upper gastrointestinal (GI) endoscopy, which obtains biopsies of the esophagus. During an endoscopy, the patient is sedated and medical staff inserts a flexible tube (endoscope) into the esophagus. The endoscope contains a light and a miniature camera, allowing the doctor to determine if the tissue seems concerning. If suspicious tissue is found, the doctor will use a pincher-like tool to remove several small pieces of it. This process is called a biopsy. The samples are then examined in a laboratory to determine if the person has Barrett's esophagus.
It is currently suggested that adults with more than one risk factor for esophageal adenocarcinoma, such as age greater than 50, GERD symptoms for many years, Caucasian race, hiatal hernia, or obesity should consider undergoing an endoscopy with biopsies to check for the condition. However, recommendations regarding screening for Barrett's esophagus may change periodically due to the most recent research, so it is best to consult with your doctor regarding the most recent recommendations.
One reason that doctors screen for Barrett's esophagus is that there is a chance, albeit small, for a person with Barrett's esophagus to develop a specific kind of cancer called esophageal adenocarcinoma. Each year, less than one percent of people with Barrett's esophagus develop this cancer. However, Barrett's esophagus may be present long before the cancer develops. Often, the cancer is not detected until its later stages when treatments are not as effective. People with Barrett's esophagus are usually recommended to periodically undergo endoscopies that include biopsies in order to check for the cancer's warning signs. It is important that multiple biopsies are taken in order to test thoroughly for cancerous or precancerous cells. Sometimes these cells can be missed in a single biopsy.
Usually precancerous cells appear in Barrett's esophagus tissue prior to the onset of cancer. When these cells are present it is classified as a condition called dysplasia. This condition serves as a strong warning sign of the possibility for cancer in the future. Detecting and treating precancerous cells may prevent the actual cancer from developing.
Generally Barrett's esophagus is not treated with surgery or procedures unless tests show a high chance of cancer development. This means that the dysplasia is severe or high-grade.
Treatment options for Barrett's esophagus with dysplasia or cancer include:
The diagnosis and treatment of GERD may prevent the onset of Barrett's esophagus. There are medications that your doctor may prescribe to treat GERD (see the NetWellness GERD Overview). However, there are also some lifestyle changes that can be made to manage GERD, which could potentially prevent Barrett's esophagus:
It is also important to avoid foods and liquids that relax the stomach muscle or stimulate acid. Caffeine, peppermint, spearmint, alcohol, citrus foods, juices, and foods high in fat are examples.
This article is a NetWellness exclusive.
Last Reviewed: Jun 24, 2011
Linda Cheng Cummings, MD, MS
Assistant Professor of Medicine
School of Medicine
Case Western Reserve University