Barrett's Esophagus – Esophagus, Reflux, and Gastroenterology in Diseases of the Esophagus and Stomach - Pitfalls in Barrett's Esophagus

Barrett’s esophagus refers to the presence of a specific type of mucosal lining in the lower part of the esophagus (metaplastic Barrett’s epithelium). It occurs more frequently in patients with reflux disease.

These mucosal changes can be circular (encircling the entire esophagus) or tongue-shaped. A distinction is arbitrarily made between short-segment (short-segment; < 3 cm) and long-segment (long-segment; > 3 cm) Barrett’s esophagus.

Barrett’s esophagus is twice as common in men as in women. According to the literature, it is diagnosed in approximately 5% of the general population (with significant variation, ranging from 1% to 20% depending on the study).

The location of the esophagus and the stomach © SciePro | AdobeStock

Gastroesophageal reflux disease is considered one of the causes of Barrett’s esophagus. However, heredity has also been described as a cause. The risk of esophageal cancer is significantly increased in patients with Barrett’s esophagus (intestinal metaplasia of the distal esophagus).

The incidence of esophageal adenocarcinoma is increasing, which is why Barrett’s esophagus is receiving a great deal of attention.

In addition to chronic reflux disease, risk factors include

• obesity,
• male gender,
• age over 50, and
• Caucasian ethnicity.

Many patients with Barrett’s esophagus suffer from heartburn. However, approximately 40% of patients have no reflux symptoms and are therefore asymptomatic. In these patients, Barrett’s esophagus is therefore discovered only incidentally.

The diagnosis is made endoscopically and histologically (through the collection of tissue samples). New endoscopic techniques may improve diagnosis. These include

• staining the esophagus with special dyes and
• the use of new endoscopes capable of digitally processing images.

Patients with long-standing heartburn should therefore undergo an endoscopy. Hoarseness, coughing, and even asthma can also be symptoms of reflux disease. These should be evaluated via endoscopy if necessary.

Left: Healthy stomach. Right: Reflux disease, in which stomach acid flows back into the esophagus © bilderzwerg | AdobeStock

Warning signs include

• difficulty swallowing,
• chest pain after eating, or
• vomiting blood

These symptoms make an endoscopy absolutely necessary, as in these cases, a malignancy resulting from Barrett’s esophagus is possible.

After a diagnosis of Barrett’s esophagus, a biopsy must be performed. This can determine whether cells have already undergone changes known as dysplasia and whether a precancerous condition is present.

Treatment for Barrett’s esophagus depends on the symptoms and whether abnormal cells (dysplasia) were already detected during the endoscopy.

For asymptomatic patients without dysplasia, regular endoscopic follow-up every 3–4 years is currently recommended. This is the position of the German Society for Digestive and Metabolic Diseases (DGVS). Patients with heartburn and no dysplasia should be treated with a so-called acid blocker (proton pump inhibitor).

If, on the other hand, dysplasia is detected in Barrett’s esophagus, close monitoring—initially frequent and then annual—should be performed for so-called mild dysplasia. In cases of severe dysplasia, follow-up within 3 months and, if necessary, treatment are required.

The latter can now be performed using minimally invasive endoscopic techniques (mucosal resection, laser, thermal ablation). Surgery to treat dysplasia is required only in exceptional cases.

Early-stage cancers in Barrett’s esophagus can also be removed endoscopically. However, this should be reserved exclusively for specialized centers. These centers have a high volume of cases and thus the corresponding expertise. In these cases, endoscopists and surgeons should jointly determine the appropriate treatment.

The esophagus is part of the digestive tract. Therefore, the appropriate specialist to consult if Barrett’s esophagus is suspected is a gastroenterologist. Gastroenterology is a subspecialty of internal medicine. A specialist in this field has therefore completed additional specialty training after earning their medical degree. This training lasts six years and includes both basic training in internal medicine and a three-year gastroenterology fellowship.

Barrett’s esophagus refers to a transformation of the esophageal mucosa in the lower part of the esophagus caused by chronic reflux, in which stomach acid flows back into the esophagus, leading to typical changes in the esophageal mucosa.

Barrett’s esophagus usually develops at the lower end of the esophagus as a result of reflux disease with inflammation of the lower esophagus due to gastroesophageal reflux; however, Barrett’s esophagus itself often causes no symptoms initially, however, Barrett’s esophagus is particularly common in patients with long-standing heartburn, and men are affected more frequently than women—in some cases, twice as often.

The diagnosis of Barrett’s esophagus—or rather, the identification and confirmation of the condition—is made endoscopically through examination of the esophagus and stomach with a biopsy, with the presence of Barrett’s esophagus confirmed by the detection of typical changes in the esophageal mucosa.

The condition was named after the British surgeon Norman Barrett, or more specifically, the British surgeon Norman Rupert Barrett; Norman Barrett described the changes along the entire length of the esophagus early on, and Barrett’s esophagus was defined as a precancerous change in the esophagus.

Risk factors for its development include chronic reflux, persistent reflux disease, and individual cellular causes of Barrett’s esophagus, so that close monitoring after one year may be advisable in cases of Barrett’s esophagus, particularly if high-grade dysplasia or extensive changes in the mucosa are present, which can lead to Barrett’s esophagus over the long term.

Treatment of Barrett’s esophagus depends on the extent of the dysplasia; radiofrequency ablation is used in advanced stages, and regular monitoring remains crucial, as Barrett’s esophagus often develops insidiously and serious consequences can only be prevented through structured follow-up care.

What is Barrett’s esophagus?

Barrett’s esophagus refers to a chronic change in the mucosa of the lower esophagus. It usually develops as a result of long-standing gastroesophageal reflux disease, in which stomach acid flows back into the esophagus. This transformation of the esophageal tissue is considered a risk factor for esophageal cancer.

How is Barrett’s esophagus diagnosed?

Barrett’s esophagus is diagnosed through an endoscopy performed in a gastroenterology clinic. During the procedure, the lining of the esophagus is examined endoscopically, and a tissue sample is taken. The detection of dysplasia determines the next steps and the necessary follow-up endoscopic monitoring.

What symptoms does Barrett’s esophagus cause?

Barrett’s esophagus itself often does not cause any symptoms. However, those affected often report heartburn or other reflux symptoms as part of chronic reflux disease. Inflammation of the lower esophagus due to reflux can trigger additional symptoms.

Is Barrett’s esophagus dangerous?

Barrett’s esophagus can increase the risk of developing esophageal adenocarcinoma. The risk of a malignant tumor is particularly elevated in cases of high-grade dysplasia. Therefore, regular endoscopic monitoring is important.

How is Barrett’s esophagus treated?

Treatment for Barrett’s esophagus depends on the extent of the changes. In cases of low-grade dysplasia, monitoring is usually the primary focus, whereas in cases of high-grade dysplasia, endoscopic treatment such as radiofrequency ablation may be performed. The goal is to reduce the risk of esophageal cancer at an early stage.