Barrett's esophagus is a condition where the lining of the esophagus is replaced by intestinal-type mucosa. It is typically diagnosed via endoscopy with biopsy. Treatment options include antisecretory therapy using PPIs, surgery, ablation, and chemoprevention. Endoscopic mucosal resection is an alternative to surgery for high-grade dysplasia or intramucosal cancer after excluding nodal metastases with endoscopic ultrasound. Management depends on the grade of dysplasia, ranging from follow up endoscopy for no dysplasia to endoscopic eradication for high-grade dysplasia.