Treatment for Severe Heartburn Can Fight Esophageal Cancer

by Adeline Dorcas on  August 24, 2018 at 12:11 PM Cancer News
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Treatment for severe heartburn can help prevent esophageal cancer, reports a new study. The findings of the study are published in the scientific journal JAMA Oncology.
Treatment for Severe Heartburn Can Fight Esophageal Cancer
Treatment for Severe Heartburn Can Fight Esophageal Cancer

Pathological heartburn and acid reflux affect 10-20 percent of the adult population. Long and severe reflux is the strongest risk factor for cancer of the esophagus (type adenocarcinoma), an aggressive cancer that is difficult to treat.

Reflux is usually treated with medicine to make the stomach contents less acidic, which usually eliminates or reduces symptoms. One alternative is to have an operation (anti-reflux surgery) which prevents the stomach contents from coming up into the esophagus. Previous studies have not conclusively demonstrated that these treatments prevent esophageal cancer, but the studies have not been sufficiently large or had enough follow-up time to ensure that conclusions can be drawn on any long-term cancer-preventive effects.

In the present study, researchers used health data records from 1964 to 2014 from the five Nordic countries. Of the more than 940,000 patients with reflux in the study, about 895,000 received medical treatment and of those nearly 2,370 patients (0.3 percent) developed cancer of the esophagus during the follow-up period.

The risk of cancer of the esophagus decreased over time following treatment and was similar to that of the corresponding population after 15 years or more in those who received medication.

Of the more than 48,400 patients who had anti-reflux surgery, 177 (0.4 percent) developed cancer of the esophagus during the follow-up period. The risk of esophageal cancer clearly fell also in this group and was at the same level as in the corresponding population 15 years or more after the operation.

When the patients with reflux who had an operation were compared with those with reflux who received medication, the patients who had been operated on had a slightly higher risk of esophageal cancer during the entire follow-up period, but the risk did not increase over time. This is probably caused by the fact that the operated patients had more serious reflux from the beginning.

"The results show that effective medical or surgical treatment of reflux prevents cancer of the esophagus. But because the individual's risk of developing esophageal cancer is low, even in those with reflux disease, the results do not justify treating reflux solely as a cancer-preventive measure. The symptoms and complications of reflux disease should continue to govern treatment," says John Maret-Ouda, physician, and scientist at the Department of Molecular Medicine and Surgery at Karolinska Institutet in Sweden and the first author of the study.

However, he points out that for the small percentage of people with severe reflux in combination with other risk factors for esophageal cancer, such as obesity, male gender, and mature age, effective and continuous medical treatment or an operation to treat reflux is recommended.

"Previous research results have shown poor cancer-preventive effects from anti-reflux surgery. The difference now is that for the first time we can show statistically significant results because we have a sufficiently large study with a long follow-up period of over 15 years following the operation," says Jesper Lagergren, consultant surgeon and professor at the Department of Molecular Medicine and Surgery, Karolinska Institutet, who led the study.

Source: Eurekalert

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