PT - JOURNAL ARTICLE AU - SATO, TOSHIHIRO AU - HISAKA, TORU AU - SAKAI, HISAMUNE AU - ISHIKAWA, HIROTO AU - KAWAHARA, RYUICHI AU - GOTO, YUICHI AU - NOMURA, YORIKO AU - YASUNAGA, MASAFUMI AU - FUJITA, FUMIHIKO AU - TANIGAWA, MASAHIKO AU - NAITO, YOSHIKI AU - AKIBA, JUN AU - YANO, HIROHISA AU - TANAKA, HIROYUKI AU - AKAGI, YOSHITO AU - OKUDA, KOJI TI - Clinicopathological Study of Resections of Intraductal Papillary Neoplasm of the Bile Duct AID - 10.21873/anticanres.13635 DP - 2019 Aug 01 TA - Anticancer Research PG - 4569--4573 VI - 39 IP - 8 4099 - http://ar.iiarjournals.org/content/39/8/4569.short 4100 - http://ar.iiarjournals.org/content/39/8/4569.full SO - Anticancer Res2019 Aug 01; 39 AB - Background/Aim: The aim of this study was to examine the clinicopathological features of intraductal papillary neoplasm of the bile duct (IPNB) and investigate their relationships with intraductal papillary mucinous neoplasm (IPMN). Patients and Methods: Our study included 104 patients who underwent resection of tumors that showed papillary growth within the bile duct and pancreas. Results: Comparisons were performed based on subtypes and histological grades. The presence of various histological grades was confirmed in both the IPNB group and the IPMN group, and statistical significance was found in the between-group comparisons of subtypes and histological grades. It was shown that while all patients who underwent IPNB resection did not match the classifications proposed by Nakanuma et al., they did reflect classification characteristics. Conclusion: IPNB and IPMN have common clinical histological features. Common features between IPNB subtype classifications were also identified, which may provide novel diagnostics.