Endoscopy Unit;
Alfa Institute of Gastroenterology;
School of Medicine;
Federal University of Minas Gerais;
Hospital Mater Dei Contorno;
Department of Gastrointestinal Oncology;
Osaka Medical Center for Cancer and Cardiovascular Diseases;
Laboratory CEAP;
Department of Pathology;
School of Medicine;
Federal University of Minas Gerais;
Department of Pathology;
Osaka Medical Center for Cancer and Cardiovascular Diseases;
Endoscopic; submucosal; dissection; Early; gastric; cancer; Endoscopic; treatment; Healing; Scar;