Can heat zapping stop esophagus cancer before it starts?

This study looks at whether ablation therapy (using heat or light to destroy abnormal cells) can control Barrett's esophagus, a condition that can lead to esophageal cancer. About 600 adults with high-grade dysplasia or early cancer will be treated and followed to see if the abnormal tissue comes back. The goal is to manage the disease and prevent it from getting worse.