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  1. No Access

    Article

    Intraductal papillary neoplasm of the bile duct with metachronous development in the downstream bile duct after radical resection

    We report a case of intraductal papillary neoplasms of the bile duct (IPNB) that metachronously developed twice in the downstream bile duct after radical resection. The first lesion was located in the left int...

    Taito Ito, Takeshi Hisa, Yui Ito, Akiharu Kudo… in Clinical Journal of Gastroenterology (2024)

  2. No Access

    Article

    A resected case of focal autoimmune pancreatitis with pancreatic duct wall thickening representing periductal lymphoplasmacytic infiltrate

    This case revealed that branch pancreatic duct wall thickening by endoscopic ultrasonography represented periductal lymphoplasmacytic infiltrate as a characteristic histopathological finding of autoimmune panc...

    Keita Ishii, Takeshi Hisa, Akiharu Kudo… in Clinical Journal of Gastroenterology (2021)

  3. Article

    Open Access

    Safety of endoscopic procedures with monopolar versus bipolar instruments in an ex vivo porcine model

    Monopolar instruments are generally used in colorectal endoscopic mucosal resection (EMR). Bipolar instruments have previously been reported to be as safe as monopolar instruments. We sought to compare the saf...

    Kensuke Shinmura, Hiroaki Ikematsu, Motohiro Kojima… in BMC Gastroenterology (2020)

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    Article

    Endoscopic submucosal resection with a ligation device for the treatment of duodenal neuroendocrine tumors

    Endoscopic submucosal resection with a ligation device (ESMR-L) is effective for rectal neuroendocrine tumors (NETs); however, its effectiveness for duodenal NETs is unclear. This study evaluated the efficacy ...

    Shozo Osera, Yasuhiro Oono, Hiroaki Ikematsu, Tomonori Yano… in Surgical Endoscopy (2016)

  5. No Access

    Article

    Peritonitis related to percutaneous endoscopic gastrostomy using the direct method for cancer patients

    Percutaneous endoscopic gastrostomy (PEG) using the direct method is generally indicated for cancer patients. However, there are little available data about peritonitis related to this method. The aim of this...

    Shozo Osera, Tomonori Yano, Tomoyuki Odagaki, Yasuhiro Oono… in Surgical Endoscopy (2015)

  6. No Access

    Article

    Usefulness of narrow-band imaging with dual-focus magnification for differential diagnosis of small colorectal polyps

    Many authors have already reported the usefulness of narrow-band imaging (NBI) for the differential diagnosis of non-neoplastic and neoplastic colorectal lesions. However, it is not clear whether magnification...

    Hiroaki Ikematsu, Takahisa Matsuda, Shozo Osera, Maomi Imajoh… in Surgical Endoscopy (2015)

  7. No Access

    Article

    Clinicopathological differences of laterally spreading tumors arising in the colon and rectum

    Laterally spreading tumors (LST) have been recognized worldwide. The aim of our retrospective study was to evaluate the clinicopathological differences of LST arising in the colon and rectum.

    Hideaki Miyamoto, Hiroaki Ikematsu… in International Journal of Colorectal Disease (2014)