London: The team conducted a study on 13,805 patients aged 66 or older with cancer of the respiratory and upper digestive tracts and 13,805 patients without cancer.
They wanted to analyse inflammatory condition gastroesophageal reflux disease (GERD or acid reflux) and the development of cancer.
The patients with cancer of the respiratory and upper digestive tracts (outcome) were compared to those without cancer to examine whether GERD (exposure) was associated with cancer.
The results suggested that GERD was associated with cancer of the throat, tonsils and parts of the sinuses.
Author Edward D. McCoul from the Tulane University School of Medicine, New Orleans explained that GERD was associated with cancer in older adults in the respiratory and upper digestive tracts.
This association requires further study to determine causality and to possibly identify an at-risk population so surveillance can be improved and treatment initiated earlier.