Department of Surgery;
Division of Digestive Surgery;
Kyoto Prefectural University of Medicine;
Department of Surgery;
Maizuru Medical center;
Department of Radiology;
Kyoto Prefectural University of Medicine;
Department of Surgical Pathology;
Kyoto Prefectural University of Medicine;
Preoperative; chemotherapy; Gastric; cancer; Metastatic; lymph; node; Histological; regression; grade; Lymphadenectomy;