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22 results on '"Nakase, Kojiro"'

1. Nonrecurrence Rate of Underwater EMR for ≤20-mm Nonampullary Duodenal Adenomas: A Multicenter Prospective Study (D-UEMR Study)

Author

Kanzaki, Hiromitsu, Inoue, Shuntaro, Miyake, Muneaki, Ohmori, Masayasu, Takeuchi, Yoji, Tani, Yasuhiro, Harada, Nobuyuki, Agatsuma, Nobukazu, Okada, Keijirou, Ikenouchi, Maiko, Nakatani, Yasuki, Uenoyama, Yoshito, Yamashita, Yukitaka, Ishikawa, Shigenao, Inaba, Tomoki, Miyahara, Koji, Moritou, Yuki, Nakagawa, Masahiro, Kitae, Hiroaki, Ishida, Tsugitaka, Naito, Yuji, Nishio, Akiyoshi, Shimatani, Masaaki, Kato, Ryo, Taki, Shinya, Mandai, Koichiro, Sanada, Kasumi, Nakase, Kojiro, Nebiki, Hiroko, Saito, Shunsuke, Wakatsuki, Toshiyuki, Nishimura, Naoyuki, Yamasaki, Yasushi, Uedo, Noriya, Akamatsu, Takuji, Kagawa, Tomo, Higashi, Reiji, Dohi, Osamu, Furukawa, Masanori, Takahashi, Yu, Inoue, Takuya, Tanaka, Shouichi, Takenaka, Ryuta, Iguchi, Mikitaka, Kawamura, Takuji, Tsuzuki, Takao, Yamasaki, Tomoaki, Yamashina, Takeshi, Nasu, Junichiro, Mannami, Tomohiko, Yamauchi, Atsushi, Matsueda, Kazuhiro, Aizawa, Shigeyuki, Mitsuhashi, Toshiharu, and Okada, Hiroyuki

Published
2022
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5. Nonrecurrence Rate of Underwater EMR for ≤20-mm Nonampullary Duodenal Adenomas: A Multicenter Prospective Study (D-UEMR Study)

Author

Yamasaki, Yasushi, primary, Uedo, Noriya, additional, Akamatsu, Takuji, additional, Kagawa, Tomo, additional, Higashi, Reiji, additional, Dohi, Osamu, additional, Furukawa, Masanori, additional, Takahashi, Yu, additional, Inoue, Takuya, additional, Tanaka, Shouichi, additional, Takenaka, Ryuta, additional, Iguchi, Mikitaka, additional, Kawamura, Takuji, additional, Tsuzuki, Takao, additional, Yamasaki, Tomoaki, additional, Yamashina, Takeshi, additional, Nasu, Junichiro, additional, Mannami, Tomohiko, additional, Yamauchi, Atsushi, additional, Matsueda, Kazuhiro, additional, Aizawa, Shigeyuki, additional, Mitsuhashi, Toshiharu, additional, Okada, Hiroyuki, additional, Kanzaki, Hiromitsu, additional, Inoue, Shuntaro, additional, Miyake, Muneaki, additional, Ohmori, Masayasu, additional, Takeuchi, Yoji, additional, Tani, Yasuhiro, additional, Harada, Nobuyuki, additional, Agatsuma, Nobukazu, additional, Okada, Keijirou, additional, Ikenouchi, Maiko, additional, Nakatani, Yasuki, additional, Uenoyama, Yoshito, additional, Yamashita, Yukitaka, additional, Ishikawa, Shigenao, additional, Inaba, Tomoki, additional, Miyahara, Koji, additional, Moritou, Yuki, additional, Nakagawa, Masahiro, additional, Kitae, Hiroaki, additional, Ishida, Tsugitaka, additional, Naito, Yuji, additional, Nishio, Akiyoshi, additional, Shimatani, Masaaki, additional, Kato, Ryo, additional, Taki, Shinya, additional, Mandai, Koichiro, additional, Sanada, Kasumi, additional, Nakase, Kojiro, additional, Nebiki, Hiroko, additional, Saito, Shunsuke, additional, Wakatsuki, Toshiyuki, additional, and Nishimura, Naoyuki, additional

Published
2022
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6. Post‐endoscopic retrograde cholangiopancreatography pancreatitis assessed using criteria for acute pancreatitis

Author

Suzuki, Azumi, primary, Uno, Koji, additional, Nakase, Kojiro, additional, Mandai, Koichiro, additional, Endoh, Bunji, additional, Chikugo, Koki, additional, Kawakami, Takumi, additional, Suzuki, Takahiro, additional, Nakai, Yoshitaka, additional, Kusumoto, Kiyonori, additional, Itokawa, Yoshio, additional, Inatomi, Osamu, additional, Bamba, Shigeki, additional, Mizumoto, Yoshinori, additional, and Tanaka, Kiyohito, additional

Published
2021
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9. Endoscopic placement of covered versus uncovered self-expandable metal stents for palliation of malignant gastric outlet obstruction

Author

Yamao, Kentaro, primary, Kitano, Masayuki, additional, Chiba, Yasutaka, additional, Ogura, Takeshi, additional, Eguchi, Takaaki, additional, Moriyama, Ichiro, additional, Yamashita, Yukitaka, additional, Kato, Hironari, additional, Kayahara, Takahisa, additional, Hoki, Noriyuki, additional, Okabe, Yoshinobu, additional, Shiomi, Hideyuki, additional, Nakai, Yoshitaka, additional, Kushiyama, Yoshinori, additional, Fujimoto, Yoshifumi, additional, Hayashi, Shiro, additional, Bamba, Shigeki, additional, Kudo, Yasushi, additional, Azemoto, Nobuaki, additional, Ueki, Toshiharu, additional, Uza, Norimitsu, additional, Asada, Masanori, additional, Matsumoto, Kazuya, additional, Nebiki, Hiroko, additional, Takihara, Hiroshi, additional, Noguchi, Chisio, additional, Kamada, Hideki, additional, Nakase, Kojiro, additional, Goto, Daisuke, additional, Sanuki, Tsuyoshi, additional, Koga, Tetsuya, additional, Hashimoto, Shinichi, additional, Nishikiori, Hidefumi, additional, Serikawa, Masahiro, additional, Hanada, Keiji, additional, Hirao, Ken, additional, Ohana, Masaya, additional, Kazuyuki, Imakiire, additional, Kato, Takao, additional, Yoshida, Motoyuki, additional, and Kawamoto, Hirofumi, additional

Published
2020
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10. Significance of fecal hemoglobin concentration for predicting risk of colorectal cancer after colonoscopy

Author

Kawamura, Takuji, primary, Inoue, Takato, additional, Shinomiya, Ryo, additional, Sakai, Hiroaki, additional, Amamiya, Kana, additional, Sakiyama, Naokuni, additional, Shirakawa, Atsushi, additional, Okada, Yusuke, additional, Sanada, Kasumi, additional, Nakase, Kojiro, additional, Mandai, Koichiro, additional, Suzuki, Azumi, additional, Kamaguchi, Mai, additional, Morita, Atsushi, additional, Nishioji, Kenichi, additional, Tanaka, Kiyohito, additional, Uno, Koji, additional, Yokota, Isao, additional, Kobayashi, Masao, additional, and Yasuda, Kenjiro, additional

Published
2020
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11. Risk of colorectal cancer for fecal immunochemistry test-positive, average-risk patients after a colonoscopy

Author

Kawamura, Takuji, primary, Nakamura, Shiho, additional, Sone, Daiki, additional, Sakai, Hiroaki, additional, Amamiya, Kana, additional, Inoue, Naonori, additional, Sakiyama, Naokuni, additional, Shirakawa, Atsushi, additional, Okada, Yusuke, additional, Sanada, Kasumi, additional, Nakase, Kojiro, additional, Mandai, Koichiro, additional, Suzuki, Azumi, additional, Morita, Atsuhiro, additional, Tanaka, Kiyohito, additional, Uno, Koji, additional, and Yasuda, Kenjiro, additional

Published
2018
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12. 107 UNCOVERED VERSUS COVERED SELF-EXPANDABLE METAL STENTS IN PALLIATIVE ENDOSCOPIC TREATMENT OF MALIGNANT GASTRIC OUTLET OBSTRUCTION: A LARGE MULTICENTER RANDOMIZED TRIAL IN WEST JAPAN

Author

Kitano, Masayuki, primary, Chiba, Yasutaka, additional, Yamao, Kentaro, additional, Ogura, Takeshi, additional, Eguchi, Takaaki, additional, Moriyama, Ichiro, additional, Yamashita, Yukitaka, additional, Kato, Hironari, additional, Kayahara, Takahisa, additional, Hoki, Noriyuki, additional, Okabe, Yoshinobu, additional, Shiomi, Hideyuki, additional, Nakai, Yoshitaka, additional, Kushiyama, Yoshinori, additional, Fujimoto, Yoshifumi, additional, Hayashi, Shiro, additional, Bamba, Shigeki, additional, Kudo, Yasushi, additional, Azemoto, Nobuaki, additional, Ueki, Toshiharu, additional, Kodama, Yuzo, additional, Asada, Masanori, additional, Matsumoto, Kazuya, additional, Nebiki, Hiroko, additional, Takihara, Hiroshi, additional, Noguchi, Chishio, additional, Kamada, Hideki, additional, Nakase, Kojiro, additional, Goto, Daisuke, additional, Sanuki, Tsuyoshi, additional, Koga, Tetsuya, additional, and Kawamoto, Hirofumi, additional

Published
2018
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13. Feasibility of Underwater Endoscopic Mucosal Resection for Colorectal Lesions: A Single Center Study in Japan

Author

Kawamura, Takuji, primary, Sakai, Hiroaki, additional, Ogawa, Tomoya, additional, Sakiyama, Naokuni, additional, Ueda, Yuki, additional, Shirakawa, Atsushi, additional, Okada, Yusuke, additional, Sanada, Kasumi, additional, Nakase, Kojiro, additional, Mandai, Koichiro, additional, Suzuki, Azumi, additional, Morita, Atsuhiro, additional, Tanaka, Kiyohito, additional, Uno, Koji, additional, and Yasuda, Kenjiro, additional

Published
2018
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14. Endoscopic placement of covered versus uncovered self-expandable metal stents for palliation of malignant gastric outlet obstruction

Author

Yamao, Kentaro, Kitano, Masayuki, Chiba, Yasutaka, Ogura, Takeshi, Eguchi, Takaaki, Moriyama, Ichiro, Yamashita, Yukitaka, Kato, Hironari, Kayahara, Takahisa, Hoki, Noriyuki, Okabe, Yoshinobu, Shiomi, Hideyuki, Nakai, Yoshitaka, Kushiyama, Yoshinori, Fujimoto, Yoshifumi, Hayashi, Shiro, Bamba, Shigeki, Kudo, Yasushi, Azemoto, Nobuaki, Ueki, Toshiharu, Uza, Norimitsu, Asada, Masanori, Matsumoto, Kazuya, Nebiki, Hiroko, Takihara, Hiroshi, Noguchi, Chisio, Kamada, Hideki, Nakase, Kojiro, Goto, Daisuke, Sanuki, Tsuyoshi, Koga, Tetsuya, Hashimoto, Shinichi, Nishikiori, Hidefumi, Serikawa, Masahiro, Hanada, Keiji, Hirao, Ken, Ohana, Masaya, Kazuyuki, Imakiire, Kato, Takao, Yoshida, Motoyuki, and Kawamoto, Hirofumi

Abstract

ObjectiveStenting is an established endoscopic therapy for malignant gastric outlet obstruction (mGOO). The choice of stent (covered vs uncovered) has been examined in prior randomised studies without clear results.DesignIn a multicentre randomised prospective study, we compared covered (CSEMS) with uncovered self-expandable metal stents (UCSEMS) in patients with mGOO; main outcomes were stent dysfunction and patient survival, with subgroup analyses of patients with extrinsic and intrinsic tumours.ResultsOverall survival was poor with no difference between groups (probability at 3 months 49.7% for covered vs 48.4% for uncovered stents; log-rank for overall survival p=0.26). Within that setting of short survival, the proportion of stent dysfunction was significantly higher for uncovered stents (35.2% vs 23.4%, p=0.01) with significantly shorter time to stent dysfunction. This was mainly relevant for patients with extrinsic tumours (stent dysfunction rates for uncovered stents 35.6% vs 17.5%, p<0.01). Subgrouping was also relevant with respect to tumour ingrowth (lower with covered stents for intrinsic tumours; 1.6% vs 27.7%, p<0.01) and stent migration (higher with covered stents for extrinsic tumours: 15.3% vs 2.5%, p<0.01).ConclusionsDue to poor patient survival, minor differences between covered and uncovered stents may be less relevant even if statistically significant; however, subgroup analysis would suggest to use covered stents for intrinsic and uncovered stents for extrinsic malignancies.

Published
2021
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15. Risk of colorectal cancer for fecal immunochemistry test‐positive, average‐risk patients after a colonoscopy.

Author

Kawamura, Takuji, Nakamura, Shiho, Sone, Daiki, Sakai, Hiroaki, Amamiya, Kana, Inoue, Naonori, Sakiyama, Naokuni, Shirakawa, Atsushi, Okada, Yusuke, Sanada, Kasumi, Nakase, Kojiro, Mandai, Koichiro, Suzuki, Azumi, Morita, Atsuhiro, Tanaka, Kiyohito, Uno, Koji, and Yasuda, Kenjiro

Subjects
COLORECTAL cancer
Abstract

Background and Aim: Because the risk of colorectal cancer has not been well examined in fecal immunochemistry test (FIT)‐positive patients who previously underwent colonoscopy, this study aimed to investigate this topic. Methods: This was a single‐center, observational study of prospectively collected data in Japan. FIT‐positive, average‐risk patients who underwent colonoscopy were divided into groups as follows: those who never underwent colonoscopy in the past (no colonoscopy group), those with a history of colonoscopy between 6 months and 5 years (0.5‐ to 5‐year colonoscopy group), and those with a history of colonoscopy more than 5 years ago (> 5‐year colonoscopy group). We investigated the prevalence of advanced neoplasia and invasive cancer among these groups using multiple logistic regression analysis. Results: Detection rates of advanced neoplasia in the no colonoscopy group, 0.5‐ to 5‐year colonoscopy group, and > 5‐year colonoscopy group were 14.8% (240/1626), 3.9% (13/330), and 6.9% (17/248), respectively. Detection rates of invasive cancer in each aforementioned group were 5.7% (92/1,626), 0.3% (1/330), and 1.2% (3/248), respectively. Odds ratios of advanced neoplasia in the 0.5‐ to 5‐year colonoscopy group and > 5‐year colonoscopy were 0.23 (95% confidence interval [CI]: 0.13–0.42) and 0.40 (95% CI: 0.24–0.68), respectively, in multivariate analysis. The odds ratios of invasive cancer in each aforementioned group were 0.05 (95% CI: 0.01–0.37) and 0.19 (95% CI: 0.06–0.61), respectively. Conclusion: Re‐screening with the FIT should not be recommended for at least 5 years for average‐risk patients after colonoscopy without high‐risk neoplasms, because the risks of colorectal cancer are low in such patients. [ABSTRACT FROM AUTHOR]

Published
2019
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16. Examination time as a quality indicator of screening upper gastrointestinal endoscopy for asymptomatic examinees

Author

Kawamura, Takuji, primary, Wada, Hironori, additional, Sakiyama, Naokuni, additional, Ueda, Yuki, additional, Shirakawa, Atsushi, additional, Okada, Yusuke, additional, Sanada, Kasumi, additional, Nakase, Kojiro, additional, Mandai, Koichiro, additional, Suzuki, Azumi, additional, Kamaguchi, Mai, additional, Morita, Atsuhiro, additional, Nishioji, Kenichi, additional, Tanaka, Kiyohito, additional, Mochizuki, Naomi, additional, Uno, Koji, additional, Yokota, Isao, additional, Kobayashi, Masao, additional, and Yasuda, Kenjiro, additional

Published
2017
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20. A case of colonic fecal impaction caused by excessive dietary fiber intake that was endoscopically treated with intra-fecal injection of a bowel-cleansing agent.

Author

Kawabata H, Nakase K, Yamamoto T, Satake H, Yamaguchi K, Okazaki Y, Miyata M, and Motoi S

Abstract

Background and Aim: A 75-year-old man who had eaten half a head of chopped raw cabbage (approximately 600 g) daily was suffering from the left lower pain, abdominal fullness, and constipation. He was diagnosed with colonic ileus and obstructive colitis due to a fecal impaction in the sigmoid-descending junction. During colonoscopy, a tapered catheter was repeatedly inserted into the impacted feces to inject a bowel-cleansing agent. Finally, the feces were broken to be fragmented enough to path the endoscope through. After the procedure, his symptoms were immediately relieved., Relevance for Patients: Excessive dietary fiber intake can induce fecal ileus. Endoscopic treatment with intra-fecal injection of a bowel-cleansing agent is useful and worth attempting for disimpaction of feces., Competing Interests: The authors declare no conflicts of interest., (Copyright: © 2022 Author(s).)

Published
2022

21. Endoscopic ultrasonography for pre-operative local assessment and endoscopic ultrasonography-guided marking before gastrojejunostomy for duodenal obstruction using magnetic compression anastomosis.

Author

Kawabata H, Nakase K, Okazaki Y, Yamamoto T, Yamaguchi K, Ueda Y, Miyata M, and Motoi S

Abstract

Background and Aim: A 93-year-old woman who was bedridden with severe dementia was referred to our department with a 3-day history of repeated vomiting after meals. Computed tomography revealed significant dilatation of the duodenum up to the level of the third portion, which was compressed by a large, low-density mass. Upper gastrointestinal endoscopy showed narrowing of the third portion of the duodenum with edematous mucosa covered with multiple white spots, where the endoscope was able to pass through with mild resistance. B-cell lymphoma was histopathologically suspected from biopsy specimens of the mucosa. We performed gastrojejunostomy through the magnetic compression anastomosis (MCA) technique. We prepared two neodymium magnets: Flat plate shaped (15 × 3 mm) with a small hole 3 mm in diameter; a nylon thread was passed through each hole. We then confirmed the absence of no non-target tissue, including large vessels and intestine adjacent to the anastomosis where the magnets were to be placed using endoscopic ultrasonography (EUS) from the stomach. EUS-guided marking using biopsy forceps by biting the mucosa and placing a hemoclip was performed at the anastomosis site in the stomach. The magnet was pushed and delivered to the duodeno-jejuno junction, and another magnet was delivered to the marking point in the stomach. The magnets were attracted toward each other transmurally. The magnets fell into the colon by 11 days after starting the compression, and the completion of gastrojejunostomy was confirmed., Relevance for Patients: Endoscopic gastrojejunostomy using MCA is useful as a minimally invasive alternative treatment for duodenal obstruction. EUS for the pre-operative local assessment and EUS-guided marking can ensure the safety of the MCA procedure., Competing Interests: The authors declare that they have no conflicts of interest., (Copyright: © Whioce Publishing Pte. Ltd.)

Published
2021

22. [A case of advanced gastric cancer found to be remaining by gastrectomy after a clinically complete response to chemotherapy].

Author

Sakaki M, Taniguchi H, Ohgaki M, Kobayashi T, Haradai K, Okajima W, Ishii W, Yamada K, Morimura R, Kakihara N, Matsumura H, Fujii N, Iizuka R, Ikawa O, Fujii K, Izumi H, Takenaka A, and Nakase K

Subjects
Aged, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Cisplatin administration & dosage, Combined Modality Therapy, Drug Combinations, Female, Gastrectomy, Humans, Neoplasm Staging, Oxonic Acid administration & dosage, Remission Induction, Stomach Neoplasms drug therapy, Stomach Neoplasms surgery, Tegafur administration & dosage, Tomography, X-Ray Computed, Stomach Neoplasms pathology
Abstract

The patient was a 72-year-old woman diagnosed with advanced gastric cancer, hepatic portal lymph node and para-aortic lymph node metastases. After five courses of S-1/CDDP combination therapy, both the primary tumor and lymph node metastases disappeared clinically. She wished to continue chemotherapy instead of having a resection. After three more courses of S-1/CDDP therapy, gastric cancer and lymph node metastases were still completely regressed, but complications of carcinoma of the gallbladder were suspected. Gastrectomy was performed with cholecystectomy, and a histopathological examination revealed cancer cells remaining in the gastric submucosa and xanthogranulomatous cholecystitis. We consider surgical therapy for clinically completely disappearing advanced gastric cancer by chemotherapy, in addition to case report.

Published
2012

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