A case of adenocarcinoma of the Barrett esophagus after a gastrectomy for gastric ulcer is reported. An 81-year-old man was admitted to the hospital because of an epigastralgia. There was a previous history of undergoing distal gastrectomy with Billroth I reconstruction for gastric ulcer at the age of 45. Upper gastrointestinal endoscopy revealed an alteration of the esophageal mucosa that seemed to be Barrett epithelium. An ele-vated lesion was shown at the 30cm distant from the incisor, and biopsy specimen showed findings of esophageal cancer. Total esophagectomy, lymph nodes dissection of thoracic and abdominal region, and retrosternal right colic reconstruction were performed. Pathologically, an elevated lesion was 2.7×1.8cm in size and mucosal change of white colorization covered 4.7cm in length. Histologically, the elevated lesion was diagnosed as well differentiated adenocarcinoma, because atypical glandular epithelium forming papillary proliferation was comfirmed in the lesion. He has been well without any signs of recurrence for 3.5 year after the operation.