That's exactly where I was going with the post. My brother was being checked every 6 months for essentially the same problem. On the third checkup, they found esophageal cancer. He had to undergo a 9 hour operation, but he's fine now.
That's exactly where my dad is. He gets checked every six months. They found a lesion and biopsied it. Benign. Yay. But his issues didn't go away. His biggest issue is "acid reflux" which manifests itself as pain and trouble breathing. It's a waiting game it seems.