I was told i had barretts esophagus and now its cancer. what is treatment?

Probably surgery.: Barretts esophagus is a precursor to adenocarcinoma of the esophagus. Treatment is chiefly with surgery. Curative resection is rarely possible, with <20% 5-year survival in patients with resectable tumors. Palliative measures include laser ablation, mechanical dilatation, radiotherapy, and luminal (phenobarbital) prosthesis to bypass the tumor. Gastrostomy and jejunostomy are done for nutritional support.

Depends on stage: For stage i-iia esophageal cancer, upfront therapy is surgery or esophagectomy. For stage iib or iii therapy is either chemoradiation followed by surgery or chemoradiation alone. For stage iv, treatment is chemotherapy +/- irradiation.