Department of Gastrointestinal Oncology;
Osaka Medical Center for Cancer and Cardiovascular Diseases;
Department of Gastroenterology and Hepatology;
Okayama University Graduate School of Medicine;
Department of Pathology;
Osaka Medical Center for Cancer and Cardiovascular Diseases;
PCL Osaka Inc.;
Chromoendoscopy; Esophageal; cancer; Esophageal; squamous; neoplasia; Iodine; staining; Pinkcolor; sign;