Endoscopy Division;
National Cancer Center Hospital;
5-1-1 Tsukiji;
Chuo-ku;
Tokyo 104-0045;
Japan;
Pathology Division;
National Cancer Center Hospital;
5-1-1 Tsukiji;
Chuo-ku;
Tokyo 104-0045;
Japan;
Endoscopic; ultrasound; High-frequency; ultrasound; probe; Esophageal; cancer; Gastric; cancer; Depth; diagnosis;