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  1. No Access

    Article

    Solitary juvenile polyp of the rectum with intramucosal adenocarcinoma

    We describe a case of solitary juvenile polyp of the rectum with intramucosal adenocarcinoma. A 55-year-old man presented to our hospital for evaluation after a positive fecal occult blood test. Colonoscopy re...

    Kazuki Nagai, Uichiro Fuchizaki, Yoshimichi Ueda in Clinical Journal of Gastroenterology (2023)

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    Article

    Factors associated with poor therapeutic response in outpatients with irritable bowel syndrome: a multicenter study in Japan

    Some patients with irritable bowel syndrome (IBS) show poor response to treatment. However, risk factors associated with poor therapeutic response have not been determined.

    Eiji Yamada, Seishi Tsunoda, Tsuyoshi Abe, Eri Uchida… in Journal of Gastroenterology (2017)

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    Article

    Highly active antiretroviral therapy used to treat concurrent hepatitis B and human immunodeficiency virus infections

    We report a case of simultaneous infection with hepatitis B virus (HBV) and human immunodeficiency virus type 1 (HIV-1) in a 26-year-old Japanese homosexual man. He was admitted to our hospital for acute hepa...

    Kazuki Nagai, Hiroo Hosaka, Shuichi Kubo, Noriko Nakamura… in Journal of Gastroenterology (1999)

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    Article

    Malignant transformation of Nakamura type IV gastric polyp with CA 19-9 production

    In a 68-year-old Japanese man, a gastric polyp 24 mm in diameter with a stalk 15 mm in diameter was diagnosed as well differentiated adenocarcinoma and treated by endoscopic polypectomy. Histologically, most ...

    Kazuki Nagai, Koji Ishii, Katsuhiko Matsumaru… in Journal of Gastroenterology (1998)