Recent and prospective advancements in diagnosing cancer in Barrett’s esophagus may allow for earlier and better detection. But as with most newer technologies, some of these alternatives — ranging from computer analysis to surveillance endoscopy to saliva — have their critics as well.
http://www.healio.com/gastroenterology/esophagus/news/print/healio-gastroenterology/%7B489564d2-ab87-4abc-a9d7-ac732587d179%7D/promising-technologies-arise-for-diagnosis-of-barretts-esophagus
Promising Technologies Arise for Diagnosis of Barrett’s Esophagus