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774 results on '"Ryozawa, Shomei"'

3. ERCP using balloon-assisted endoscopes versus EUS-guided treatment for common bile duct stones in Roux-en-Y gastrectomy

Author

Sato, Tatsuya, Nakai, Yousuke, Kogure, Hirofumi, Mitsuyama, Toshiyuki, Shimatani, Masaaki, Uemura, Shinya, Iwashita, Takuji, Tanisaka, Yuki, Ryozawa, Shomei, Tsuchiya, Takayoshi, Itoi, Takao, Kin, Toshifumi, Katanuma, Akio, Kashima, Ken, Irisawa, Atsushi, Kayashima, Atsuto, Iwasaki, Eisuke, Yoshida, Akihiro, Takenaka, Mamoru, Himei, Hitomi, Kato, Hironari, Masuda, Atsuhiro, Shiomi, Hideyuki, Kawakubo, Kazumichi, Kuwatani, Masaki, Otsuka, Takeshi, Matsubara, Saburo, Nishioka, Nobu, Ogura, Takeshi, Tamura, Takaaki, Kitano, Masayuki, Hayashi, Nobuhiko, Yasuda, Ichiro, and Fujishiro, Mitsuhiro

Published
2024
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11. Efficacy and factors affecting procedure results of short-type single-balloon enteroscopy–assisted ERCP for altered anatomy: a multicenter cohort in Japan

Author

Tanisaka, Yuki, Ryozawa, Shomei, Itoi, Takao, Yamauchi, Hiroshi, Katanuma, Akio, Okabe, Yoshinobu, Irisawa, Atsushi, Nakahara, Kazunari, Iwasaki, Eisuke, Ishii, Kentaro, Kin, Toshifumi, Terabe, Hiroya, Izawa, Naoya, Morita, Ryo, Minami, Kazuhiro, Araki, Ryuichiro, Fujita, Akashi, Ogawa, Tomoya, Mizuide, Masafumi, and Kida, Mitsuhiro

Published
2022
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15. Clinical characteristics of immunoglobulin IgG4-related sclerosing cholangitis: Comparison of cases with and without autoimmune pancreatitis in a large cohort

Author

Furumatsu, Keisuke, Sawai, Shigeaki, Goto, Takuma, Okumura, Toshikatsu, Suzuki, Daisuke, Otsuka, Masayuki, Kobori, Ikuhiro, Tamano, Masaya, Koizumi, Mitsuhito, Hiasa, Yoichi, Kawabe, Naoto, Hirooka, Yoshiki, Yamamoto, Satoshi, Asano, Yukio, Inui, Kazuo, Horiguchi, Akihiko, Watanabe, Hiroyuki, Toya, Daishu, Hatayama, Katsuko, Ueki, Toshiharu, Kinoshita, Norikatsu, Sugimoto, Mitsuru, Ohira, Hiromasa, Mukai, Tsuyoshi, Tomita, Eiichi, Iwata, Keisuke, Shimizu, Shogo, Suetsugu, Jun, Shimizu, Masahito, Tsuji, Keiji, Ishida, Ryoko, Ito, Masanori, Furukawa, Ryutaro, Sakamoto, Naoya, Araki, Masahiro, Tanno, Satoshi, Sakamoto, Yasunari, Ito, Tetsuhide, Takai, Satoshi, Ikeya, Shinichi, Yamada, Takanori, Kudara, Norihiko, Shimizu, Akinori, Hanada, Keiji, Ichiki, Yasunori, Kitada, Hideki, Hifumi, Michio, Kimura, Hiroyuki, Kurosaki, Masayuki, Izumi, Namiki, Sumi, Hajime, Haruta, Jun-ichi, Hayashi, Katsumi, Harada, Ryo, Inoue, Masafumi, Nakamura, Shinichiro, Ito, Tetsuya, Tomishima, Ko, Isayama, Hiroyuki, Oura, Kyoko, Masaki, Tsutomu, Shimokawahara, Naoto, Tanoue, Shirou, Maemura, Kousei, Ido, Akio, Mizushima, Ichiro, Kawano, Mitsuhiro, Yoshida, Katsunori, Naganuma, Makoto, Murata, Miki, Nishio, Akiyoshi, Fujita, Yuji, Teratani, Takuma, Matsubara, Shohei, Tamai, Hironao, Yoshida, Yuu, Azemoto, Ryousaku, Kamata, Ken, Watanabe, Tomohiro, Kurosu, Takahiro, Koizumi, Wasaburou, Fujita, Jun, Seki, Hideyuki, Ueda, Yasuhiro, Fukumoto, Takumi, Kousaki, Takuhiro, Uchida, Kazushige, Ochiai, Toshimasa, Kawasaki, Takeshi, Tanaka, Motohiko, Ishida, Etsuji, Notohara, Kenji, Mori, Hideaki, Mori, Toshiyuki, Kawabata, Hideaki, Miyata, Masatoshi, Sakagami, Junichi, Itoh, Yoshito, Shiokawa, Masahiro, Seno, Hiroshi, Watanabe, Noriko, Naitoh, Itaru, Kataoka, Hiromi, Aoki, Toshinori, Fujishiro, Mitsuhiro, Niihara, Toru, Nishimata, Hiroto, Mitoro, Akira, Yoshiji, Hitoshi, Yoshida, Motoyuki, Ikeda, Masafumi, Tomita, Kengo, Hokari, Ryota, Hayasaka, Kenji, Amano, Yuji, Shioji, Kazuhiko, Hayashi, Kazunao, Terai, Shuji, Nakajima, Michiko, Yamahana, Junya, Matsumoto, Ryusuke, Kikuchi, Hideaki, Kanamori, Akira, Kiriyama, Seiki, Iwatsu, Shinichi, Kato, Yuji, Horiguchi, Shigeru, Yagi, Takahito, Okada, Hiroyuki, Ohkawa, Kazuyoshi, Hirao, Motohiro, Hiramatsu, Naoki, Oza, Noriko, Imamura, Haruo, Baba, Takeshi, Nakano, Shigeru, Shinobi, Tetsuya, Ryozawa, Shomei, Motoya, Masayo, Nakase, Hiroshi, Kinoshita, Noboru, Ito, Kei, Miyake, Tatsuya, Kohge, Naruaki, Tobita, Hiroshi, Joshita, Satoru, Umemura, Takeji, Kawaguchi, Shinya, Ohno, Kazuya, Sonobe, Koichi, Satoh, Akihiko, Shimosegawa, Tooru, Miura, Fumihiko, Yagi, Minami, Sano, Keiji, Tanaka, Atsushi, Kin, Toshifumi, Katanuma, Akio, Koike, Kazuhiko, Miura, Shin, Masamune, Atsushi, Kawashima, Youhei, Kagawa, Tatehiro, Azuma, Seishin, Watanabe, Mamoru, Honjyo, Mitsuyoshi, Itoi, Takao, Honda, Akira, Kobayashi, Katsumasa, Asano, Toru, Kamisawa, Terumi, Mizuno, Suguru, Nishino, Takayoshi, Taniguchi, Hideaki, Tajiri, Kazuto, Yasuda, Ichiro, Tanaka, Yoshiya, Oe, Shinji, Harada, Masaru, Kurata, Masanao, Fukasawa, Mituharu, Enomoto, Nobuyuki, Kawaji, Yuki, Kitano, Masayuki, Nishise, Yuko, Hirakawa, Hidetoshi, Ishizawa, Tetsuya, Ueno, Yoshiyuki, Kaino, Miyuki, Fujimoto, Yuko, Sakaida, Isao, Kubota, Kensuke, Nakazawa, Takahiro, Takikawa, Hajime, Unno, Michiaki, Kawa, Shigeyuki, Nakamura, Seiji, and Okazaki, Kazuichi

Published
2021
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17. Efficacy of texture and color enhancement imaging for short‐type single‐balloon enteroscopy‐assisted biliary cannulation in patients with Roux‐en‐Y gastrectomy: Multicenter study (with video).

Author

Tanisaka, Yuki, Takenaka, Mamoru, Mizuide, Masafumi, Fujita, Akashi, Jinushi, Ryuhei, Shin, Takahiro, Sugimoto, Kei, Kamata, Ken, Minaga, Kosuke, Omoto, Shunsuke, Yamazaki, Tomohiro, and Ryozawa, Shomei

Subjects
IMAGE intensifiers, REGRESSION analysis, PATIENT safety, LINEAR statistical models, CATHETERIZATION
Abstract

Objectives: Texture and color enhancement imaging (TXI) reportedly improves the identification of the papilla of Vater for selective biliary cannulation compared with white light imaging (WLI). This multicenter study evaluated the efficacy of short‐type single‐balloon enteroscopy (SBE)‐assisted biliary cannulation using a new‐generation image‐enhanced endoscopy processing system equipped with TXI in patients who underwent Roux‐en‐Y gastrectomy. Methods: Patients with Roux‐en‐Y gastrectomy with a native papilla, and underwent short SBE‐assisted biliary cannulation during endoscopic retrograde cholangiopancreatography‐related procedures between January 2019 and April 2023 were retrospectively reviewed. Outcomes of biliary cannulation using TXI and WLI were compared. The primary outcome was time to successful biliary cannulation. Results: Thirty‐three patients underwent biliary cannulation with TXI and 98 underwent WLI. The biliary cannulation success rates and median time to successful biliary cannulation with TXI and WLI were 93.9% (95% confidence interval [CI] 79.8–99.3%) and 83.7% (95% CI 74.8–90.4%), respectively (P = 0.14), and 10 min (interquartile range [IQR] 2.5–23.5) and 18 min (IQR 9.75–24), respectively (P = 0.04). Biliary cannulation with TXI required a shorter cannulation time than that required with WLI. Adverse event rates with TXI and WLI did not differ significantly (P = 0.58). Multivariate linear regression analysis showed that the use of TXI and short length of oral protrusion were associated with a shorter successful biliary cannulation time. Conclusion: Short SBE‐assisted biliary cannulation was effective and safe on TXI in patients who underwent Roux‐en‐Y gastrectomy, and achieved shorter successful biliary cannulation time. [ABSTRACT FROM AUTHOR]

Published
2024
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18. Diagnosis of isolated hilar‐/extrahepatic‐type IgG‐4‐related sclerosing cholangitis can be increased by improved recognition of this condition—A Japanese multicenter analysis.

Author

Kubota, Kensuke, Iwasaki, Eisuke, Ishikawa, Takuya, Kuwatani, Masaki, Takenaka, Mamoru, Iwashita, Takuji, Masuda, Atsuhiro, Ikeura, Tsukasa, Nakamura, Akira, Tanaka, Atsushi, Isayama, Hiroyuki, Hirooka, Yoshiki, Hirano, Kenji, Ryozawa, Shomei, Ogura, Takeshi, Fujisawa, Toshio, Kurita, Yusuke, Kikuta, Kazuhiro, Hayashi, Nobuhiko, and Masamune, Atsushi

Abstract

Background: Patients with isolated IgG4‐related sclerosing cholangitis (IgG4‐SC) often undergo unnecessary resection. The aim of this study was to validate the revised Japanese diagnostic criteria for isolated IgG‐4‐SC and to improve awareness about this condition in the population. Methods: This was a Japanese retrospective multicenter study. We focused on the data and diagnostic yield obtained using the Japanese diagnostic criteria published initially in 2012 and revised later in 2020 for the diagnosis of isolated IgG4‐SC. Results: Patients with isolated IgG4‐SC could be classified into two groups based on the primary location of the lesion: the hilar type (n = 40) and the extrahepatic type (n = 13). In total, 10 patients with the hilar type had undergone unnecessary resection. The revised 2020 criteria are useful for the diagnosis of extrahepatic lesions, which are not included in the 2012 criteria. The need for a steroid trial was reduced from 37.7% when the diagnosis was based on the 2012 criteria to 7.6% when the diagnosis was based on the revised 2020 criteria. The diagnostic specificity also improved from 58.5% for the 2012 criteria to 88.7% for the revised 2020 criteria. Conclusion: Our validation of the 2020 criteria for the diagnosis of IgG4‐SC could contribute to avoiding unnecessary resection in patients with isolated IgG4‐SC, which can be classified into the hilar and extrahepatic types. The 2020 criteria can enhance the diagnosis rate of isolated IgG4‐SC and uncover this tough‐to‐diagnose entity based on inclusion of the imaging findings and decrease the dependence on a steroid trial. [ABSTRACT FROM AUTHOR]

Published
2024
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26. Postprocedure serum amylase or lipase levels predict postendoscopic retrograde cholangiopancreatography pancreatitis: Meta‐analysis of diagnostic test accuracy studies and utility assessment.

Author

Hirota, Morihisa, Itoi, Takao, Morizane, Toshio, Koiwai, Akinobu, Yasuda, Ichiro, Ryozawa, Shomei, Mukai, Shuntaro, Ikeura, Tsukasa, Irisawa, Atsushi, Iwasaki, Eisuke, Katanuma, Akio, Kitamura, Katsuya, Takenaka, Mamoru, Ito, Tetsuhide, Masamune, Atsushi, Mayumi, Toshihiko, and Takeyama, Yoshifumi

Subjects
LIPASES, AMYLASES, PANCREATIC enzymes, DIAGNOSIS methods, ENDOSCOPIC retrograde cholangiopancreatography, PANCREATITIS
Abstract

Objectives: We aimed to clarify the clinical utility of measuring serum pancreatic enzymes after endoscopic retrograde cholangiopancreatography (ERCP) for the purpose of predicting post‐ERCP pancreatitis (PEP) by a meta‐analysis of diagnostic test accuracy studies. Methods: Studies on the prediction accuracy of PEP by serum amylase or lipase measured at 2, 3, and 4 h after ERCP were collected. A literature search was performed in PubMed and the Cochrane Library database for studies published between January 1980 and March 2023. The quality of individual studies was evaluated using the Quality Assessment of Diagnostic Accuracy Studies‐2. Data were analyzed using Meta‐DiSc 2.0 software. Results: We searched the databases and identified 20 observational studies (12,313 participants). PEPs were defined according to criteria by Cotton or modified Cotton, revised Atlanta criteria, or the Japanese criteria. Meta‐analysis of eight studies (4389 participants) showed a pooled sensitivity of 71.1% (95% confidence interval [CI] 56.1–82.5) and pooled specificity of 91.2% (95% CI 85.9–94.6) for the serum amylase cut‐off value at 3 times the upper limit of normal (ULN). Another meta‐analysis of five studies (1970 participants) showed a pooled sensitivity of 85.8% (95% CI 61.9–95.7) and pooled specificity of 85.3% (95% CI 81.9–88.1) for the serum lipase cut‐off value at 3 times ULN. Conclusion: Despite a high risk of bias due to various reference standards, this updated meta‐analysis and the utility assessment by a decision tree showed the utility of serum amylase or lipase levels more than 3 times ULN measured 2–4 h after ERCP for predicting PEP. [ABSTRACT FROM AUTHOR]

Published
2024
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27. Postprocedure serum amylase or lipase levels predict postendoscopic retrograde cholangiopancreatography pancreatitis: Meta‐analysis of diagnostic test accuracy studies and utility assessment

Author

Hirota, Morihisa, primary, Itoi, Takao, additional, Morizane, Toshio, additional, Koiwai, Akinobu, additional, Yasuda, Ichiro, additional, Ryozawa, Shomei, additional, Mukai, Shuntaro, additional, Ikeura, Tsukasa, additional, Irisawa, Atsushi, additional, Iwasaki, Eisuke, additional, Katanuma, Akio, additional, Kitamura, Katsuya, additional, Takenaka, Mamoru, additional, Ito, Tetsuhide, additional, Masamune, Atsushi, additional, Mayumi, Toshihiko, additional, and Takeyama, Yoshifumi, additional

Published
2023
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28. Current status of esophageal endoscopy including the evaluation of smoking and alcohol consumption in Japan: an analysis based on the Japan endoscopy database

Author

Katada, Chikatoshi, Horimatsu, Takahiro, Muto, Manabu, Tanaka, Kiyohito, Matsuda, Koji, Fujishiro, Mitsuhiro, Saito, Yutaka, Ohtsuka, Kazuo, Oda, Ichiro, Kato, Masayuki, Kida, Mitsuhiro, Kobayashi, Kiyonori, Hoteya, Shu, Kodashima, Shinya, Matsuda, Takahisa, Yamamoto, Hironori, Ryozawa, Shomei, Iwakiri, Ryuichi, Kutsumi, Hiromu, Miyata, Hiroaki, Kato, Mototsugu, Haruma, Ken, Fujimoto, Kazuma, Uemura, Naomi, Kaminishi, Michio, and Tajiri, Hisao

Published
2019
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29. ERCP using balloon-assisted endoscope versus EUS-guided treatment for common bile duct stones in Roux-en-Y gastrectomy

Author

Sato, Tatsuya, primary, Nakai, Yousuke, additional, Kogure, Hirofumi, additional, Mitsuyama, Toshiyuki, additional, Shimatani, Masaaki, additional, Uemura, Shinya, additional, Iwashita, Takuji, additional, Tanisaka, Yuki, additional, Ryozawa, Shomei, additional, Tsuchiya, Takayoshi, additional, Itoi, Takao, additional, Kin, Toshifumi, additional, Katanuma, Akio, additional, Kashima, Ken, additional, Irisawa, Atsushi, additional, Kayashima, Atsuto, additional, Iwasaki, Eisuke, additional, Yoshida, Akihiro, additional, Takenaka, Mamoru, additional, Himei, Hitomi, additional, Kato, Hironari, additional, Masuda, Atsuhiro, additional, Shiomi, Hideyuki, additional, Kawakubo, Kazumichi, additional, Kuwatani, Masaki, additional, Otsuka, Takeshi, additional, Matsubara, Saburo, additional, Nishioka, Nobu, additional, Ogura, Takeshi, additional, Tamura, Takaaki, additional, Kitano, Masayuki, additional, Hayashi, Nobuhiko, additional, Yasuda, Ichiro, additional, and Fujishiro, Mitsuhiro, additional

Published
2023
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33. PTEN-induced kinase 1 gene single-nucleotide variants as biomarkers in adjuvant chemotherapy for colorectal cancer: a retrospective study.

Author

Mihara, Yoshiaki, Hirasaki, Masataka, Horita, Yosuke, Fujino, Takashi, Fukushima, Hisayo, Kamakura, Yasuo, Uranishi, Kousuke, Hirano, Yasumitsu, Ryozawa, Shomei, Yasuda, Masanori, Makino, Yoshinori, Shibazaki, Satomi, and Hamaguchi, Tetsuya

Subjects
ADJUVANT chemotherapy, CANCER chemotherapy, COLORECTAL cancer, GENETIC variation, ANESTHESIA adjuvants, CANCER relapse
Abstract

Background: Fluoropyrimidine-based postoperative adjuvant chemotherapy is globally recommended for high-risk stage II and stage III colon cancer. However, adjuvant chemotherapy is often associated with severe adverse events and is not highly effective in preventing recurrence. Therefore, discovery of novel molecular biomarkers of postoperative adjuvant chemotherapy to identify patients at increased risk of recurrent colorectal cancer is warranted. Autophagy (including mitophagy) is activated under chemotherapy-induced stress and contributes to chemotherapy resistance. Expression of autophagy-related genes and their single-nucleotide polymorphisms are reported to be effective predictors of chemotherapy response in some cancers. Our goal was to evaluate the relationship between single-nucleotide variants of autophagy-related genes and recurrence rates in order to identify novel biomarkers that predict the effect of adjuvant chemotherapy in colorectal cancer. Methods: We analyzed surgical or biopsy specimens from 84 patients who underwent radical surgery followed by fluoropyrimidine-based adjuvant chemotherapy at Saitama Medical University International Medical Center between January and December 2016. Using targeted enrichment sequencing, we identified single-nucleotide variants and insertions/deletions in 50 genes, including autophagy-related genes, and examined their association with colorectal cancer recurrence rates. Results: We detected 560 single-nucleotide variants and insertions/deletions in the target region. The results of Fisher's exact test indicated that the recurrence rate of colorectal cancer after adjuvant chemotherapy was significantly lower in patients with the single-nucleotide variants (c.1018G > A [p < 0.005] or c.1562A > C [p < 0.01]) of the mitophagy-related gene PTEN-induced kinase 1. Conclusions: The two single-nucleotide variants of PINK1 gene may be biomarkers of non-recurrence in colorectal cancer patients who received postoperative adjuvant chemotherapy. [ABSTRACT FROM AUTHOR]

Published
2024
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48. STNM01, the RNA oligonucleotide targeting carbohydrate sulfotransferase 15, as second-line therapy for chemotherapy-refractory patients with unresectable pancreatic cancer: an open label, phase I/IIa trial

Author

Fujisawa, Toshio, primary, Tsuchiya, Takayoshi, additional, Kato, Motohiko, additional, Mizuide, Masafumi, additional, Takakura, Kazuki, additional, Nishimura, Makoto, additional, Kutsumi, Hiromu, additional, Matsuda, Yoko, additional, Arai, Tomio, additional, Ryozawa, Shomei, additional, Itoi, Takao, additional, Isayama, Hiroyuki, additional, Saya, Hideyuki, additional, and Yahagi, Naohisa, additional

Published
2023
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49. Additional file 2 of Comparison of serum acylcarnitine levels in patients with myalgic encephalomyelitis/chronic fatigue syndrome and healthy controls: a systematic review and meta-analysis

Author

Jinushi, Ryuhei, Masuda, Sakue, Tanisaka, Yuki, Nishiguchi, Sho, Shionoya, Kento, Sato, Ryo, Sugimoto, Kei, Shin, Takahiro, Shiomi, Rie, Fujita, Akashi, Mizuide, Masafumi, and Ryozawa, Shomei

Abstract

Additional file 2: Table S2. NOS for assessing the quality of retrospective studies included in the systematic review

Published
2023
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