I had an extremely long 9cm segment of barrets with low grade dysplasia. For context, a typical segment of Barret's is like 2-3cm. My doctor was worried that with my length segment, there was a good chance I could start towards high-grade dyspasia and theyd miss it because they can only biopsy so much when they did my regular scopes. So she put me into a study for a technique called cryo-ablation where they use liquid nitrogen to freeze / kill the barrett's cells. Took them like four treatments to do it all since they can't hit that long a segment in one shot. But thankfully it worked and I'm free of Barrett's / dyspasia. And thanks to nexium I'm free of heartburn too.
I'm pretty open about my situation since it required me to be out of work a lot while these treatments were going on and you'd be surprised how many people say they have chronic reflux and/or Barrett's too. It's a lot. An epidemic almost, that hardly anyone even knows about, even people who have it don't realize how common it is.
I think the treatments you went through are what my doctor mentioned to me the last time I had a Gastroscopy. So far my dysplasia is controlled, but he said if it ever does turn cancerous, that there are procedures they can do that have been very successful.