P412 Time trend in clinicopathological features and prognosis of Ulcerative Colitis associated neoplasia: A nationwide cohort in Japan

Komatsu, K.(1)*;Shinagawa, T.(1);Noguchi, T.(1);Uchino, M.(2);Ikeuchi, H.(2);Okabayashi, K.(3);Tanaka, S.(4);Futami, K.(5);Itabashi, M.(6);Watanabe, K.(7);Nagahara, H.(8);Okita, Y.(9);Shimada, Y.(10);Mizuuchi, Y.(11);Okamoto, K.(12);Yamada, K.(13);Sato, Y.(14);Mizushima, T.(15);Kimura, H.(16);Takahashi, K.(17);Hida, K.(18);Kinugasa, Y.(19);Ishida, F.(20);Okuda, J.(21);Daito, K.(22);Yamamoto, T.(23);Yamamoto, S.(24);Koyama, F.(25);Hanai, T.(26);Komori, K.(27);Shida, D.(28);Arakaki, J.(29);Akagi, Y.(30);Yamaguchi, S.(31);Ueno, H.(32);Matsuda, K.(33);Ajioka, Y.(34);Sugihara, K.(35);Ishihara, S.(1);

(1)The University of Tokyo, Department of Surgical Oncology, Tokyo, Japan;(2)Hyogo College of Medicine, Department of Inflammatory Bowel Disease Surgery, Nishinomiya, Japan;(3)Keio University School of Medicine, Department of Surgery, Tokyo, Japan;(4)Hiroshima University Hospital, Department of Endoscopy, Hiroshima, Japan;(5)Fukuoka University Chikushi Hospital, Department of Surgery, Chikushino, Japan;(6)Tokyo Women’s Medical University, Department of Surgery- Division of Inflammatory Bowel Disease Surgery, Tokyo, Japan;(7)Tohoku University Graduate School of Medicine, Department of Surgery, Sendai, Japan;(8)Osaka City University Graduate School of Medicine, Department of Gastroenterological Surgery, Osaka, Japan;(9)Mie University Graduate School of Medicine, Department of Gastrointestinal and Pediatric Surgery- Institute of Life Sciences, Mie, Japan;(10)Niigata University, Division of Digestive and General Surgery- Graduate School of Medical and Dental Sciences, Niigata, Japan;(11)Kyushu University, Department of Surgery and Oncology- Graduate School of Medical Sciences, Fukuoka, Japan;(12)Tokyo Yamate Medical Center, Department of Coloproctology, Tokyo, Japan;(13)Coloproctology Center Takano Hospital, Department of Surgery, Kumamoto, Japan;(14)Toho University Sakura Medical Center, Department of Surgery, Chiba, Japan;(15)Osaka University, Department of Gastroenterological Surgery- Graduate School of Medical, Osaka, Japan;(16)Yokohama City University Medical Center, Inflammatory Bowel Disease Center, Yokohama, Japan;(17)Tohoku Rosai Hospital, Department of Colorectal Surgery, Sendai, Japan;(18)Kyoto University Hospital, Department of Surgery-, Kyoto, Japan;(19)Tokyo Medical and Dental University, Department of Gastrointestinal Surgery, Tokyo, Japan;(20)Showa University Northern Yokohama Hospital, Digestive disease center, Kanagawa, Japan;(21)Osaka Medical and Pharmaceutical University, Department of General and Gastroenterological Surgery, Takatsuki, Japan;(22)Kindai University, Department of Surgery- Faculty of Medicine, Osaka, Japan;(23)Yokkaichi Hazu Medical Center, Inflammatory Bowel Disease Center, Yokkaichi, Japan;(24)Tokai University School of Medicine, Department of Gastroenterological Surgery, Tokyo, Japan;(25)Nara Medical University, Department of Surgery, Nara, Japan;(26)Fujita Health University- School of Medicine, Department of Surgery, Mie, Japan;(27)Aichi Cancer Center Hospital, Department of Gastroenterological Surgery, Aichi, Japan;(28)IMSUT Hospital- The Institute of Medical Science- The University of Tokyo, Department of Surgery, Tokyo, Japan;(29)Urasoe General Hospital, Center for Gastroenterology- Department of Surgery, Okinawa, Japan;(30)Kurume University Hospital, Department of Surgery, Kurume, Japan;(31)Saitama Medical University International Medical Center-, Department of Gastroenterological Surgery, Saitama, Japan;(32)National Defense Medical College, Department of Surgery, Tokorozawa, Japan;(33)Teikyo University School of Medicine, Department of Surgery, Tokyo, Japan;(34)Niigata University, Department of Pathology, Niigata, Japan;(35)Tokyo Medical and Dental University, Honorary Director, Tokyo, Japan; The Study Group for Inflammatory Bowel Disease Associated Intestinal Cancers by the Japanese Society for Cancer of the Colon and Rectum