TY - JOUR T1 - Neuroendocrine Tumor of the Hilar Bile Duct JF - Anticancer Research JO - Anticancer Res SP - 903 LP - 907 DO - 10.21873/anticanres.13192 VL - 39 IS - 2 AU - NAOKI UMEZAKI AU - DAISUKE HASHIMOTO AU - YO-ICHI YAMASHITA AU - SHIGEKI NAKAGAWA AU - YOUSUKE NAKAO AU - RUMI ITOYAMA AU - TOSHIHIKO YUSA AU - TAKANOBU YAMAO AU - HIROHISA OKABE AU - KATSUNORI IMAI AU - HIROMITSU HAYASHI AU - AKIRA CHIKAMOTO AU - HIDEO BABA Y1 - 2019/02/01 UR - http://ar.iiarjournals.org/content/39/2/903.abstract N2 - Neuroendocrine tumors usually develop in the gastrointestinal tract, pancreas, and lung. Therefore, a neuroendocrine tumor of the bile duct is quite rare. We present a 59-year-old-male patient whose preoperative diagnosis was hilar cholangiocarcinoma. One month after embolization of the left branch and anterior branch of the portal vein, he underwent left hepatic trisegmentectomy and extrahepatic bile duct resection. Pathological examination revealed the neuroendocrine tumor in the submucosal layer of the hilar bile duct. Because there was no neuroendocrine tumor in other organs, the tumor was considered a primary neuroendocrine tumor of the hilar bile duct, rather than a liver metastasis from other organs. We also present a review of the English literature regarding neuroendocrine tumors of the bile duct. ER -