Recognizing early stages of esophageal cancer is difficult because it can easily be missed. Medical researchers have now been working to develop a method to enable a computer to scan esophagus images for signs of esophageal cancer. With exceptional results: the computer recognizes early cancer with almost as much accuracy as top specialists, of which there is only a handful.
https://www.sciencedaily.com/releases/2016/07/160705111908.htm
New detection method paves the way for 100 percent detection of esophageal cancer