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Y. Niwa · SciRah

Researcher profile · Semantic Scholar

Y. Niwa

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Y. Niwa — researcher profile on SciRah

h-index: 55
Works: 406
Citations: 10K

Most-cited papers

Phase III study comparing oxaliplatin plus S-1 with cisplatin plus S-1 in chemotherapy-naïve patients with advanced gastric cancer.
Yasuhide Yamada, Kazuhide Higuchi, K. Nishikawa, M. Gotoh +17 more
2015Annals of Oncology508 citations Open access
Semantic Scholar
Helicobacter pylori, Homologous-Recombination Genes, and Gastric Cancer.
Y. Usui, Y. Taniyama, Mikiko Endo, Y. Koyanagi +24 more
2023New England Journal of Medicine178 citations
Semantic Scholar
Usefulness of Deep Learning Analysis for the Diagnosis of Malignancy in Intraductal Papillary Mucinous Neoplasms of the Pancreas
Takamichi Kuwahara, K. Hara, N. Mizuno, Nozomi Okuno +10 more
2019Clinical and Translational Gastroenterology168 citations Open access
Semantic Scholar
Short‐term outcomes of multicenter prospective cohort study of gastric endoscopic resection: ‘Real‐world evidence’ in Japan
Haruhisa Suzuki, K. Takizawa, T. Hirasawa, Y. Takeuchi +32 more
2018Digestive Endoscopy162 citations Open access
Semantic Scholar
Endoscopic ultrasonography-guided biliary drainage: Who, when, which, and how?
K. Hara, K. Yamao, N. Mizuno, S. Hijioka +8 more
2016World Journal of Gastroenterology147 citations Open access
Semantic Scholar
A nonrandomized, single-arm confirmatory trial of expanded endoscopic submucosal dissection indication for undifferentiated early gastric cancer: Japan Clinical Oncology Group study (JCOG1009/1010)
K. Takizawa, H. Ono, N. Hasuike, A. Takashima +20 more
2020Gastric Cancer96 citations Open access
Semantic Scholar
Evaluation of Modified Glasgow Prognostic Score for Pancreatic Cancer: A Retrospective Cohort Study
H. Imaoka, N. Mizuno, K. Hara, S. Hijioka +10 more
2016Pancreas79 citations
Semantic Scholar
Diagnostic ability of artificial intelligence using deep learning analysis of cyst fluid in differentiating malignant from benign pancreatic cystic lesions
Y. Kurita, Takamichi Kuwahara, K. Hara, N. Mizuno +9 more
2019Scientific Reports75 citations Open access
Semantic Scholar
Artificial intelligence using deep learning analysis of endoscopic ultrasonography images for the differential diagnosis of pancreatic masses
Takamichi Kuwahara, Kazuo Hara, N. Mizuno, S. Haba +14 more
2022Endoscopy70 citations
Semantic Scholar
Evaluation of an e-learning system for diagnosis of gastric lesions using magnifying narrow-band imaging: a multicenter randomized controlled study
Hiroyoshi Nakanishi, H. Doyama, H. Ishikawa, N. Uedo +75 more
2017Endoscopy70 citations
Semantic Scholar
Diagnostic performance and factors influencing the accuracy of EUS-FNA of pancreatic neuroendocrine neoplasms
S. Hijioka, K. Hara, N. Mizuno, H. Imaoka +13 more
2016Journal of gastroenterology59 citations Open access
Semantic Scholar
Efficacy of the 6‐mm fully covered self‐expandable metal stent during endoscopic ultrasound‐guided hepaticogastrostomy as a primary biliary drainage for the cases estimated difficult endoscopic retrograde cholangiopancreatography: A prospective clinical study
Nozomi Okuno, K. Hara, N. Mizuno, Takamichi Kuwahara +6 more
2018Journal of Gastroenterology and Hepatology50 citations
Semantic Scholar
Efficacy and safety of S-1 and oxaliplatin combination therapy in elderly patients with advanced gastric cancer
H. Bando, Yasuhide Yamada, S. Tanabe, K. Nishikawa +18 more
2016Gastric Cancer46 citations Open access
Semantic Scholar
Association between ALDH2 and ADH1B polymorphisms, alcohol drinking and gastric cancer: a replication and mediation analysis
Kuka Ishioka, Hiroyuki Masaoka, H. Ito, I. Oze +6 more
2018Gastric Cancer43 citations Open access
Semantic Scholar
Clinical course of gastrointestinal stromal tumor diagnosed by endoscopic ultrasound‐guided fine‐needle aspiration
Masanari Sekine, H. Imaoka, N. Mizuno, K. Hara +12 more
2015Digestive Endoscopy42 citations
Semantic Scholar
Prognostic impact of carcinoembryonic antigen (CEA) on patients with metastatic pancreatic cancer: A retrospective cohort study.
H. Imaoka, N. Mizuno, K. Hara, S. Hijioka +10 more
2016Pancreatology : official journal of the International Association of Pancreatology (IAP) ... [et al.]40 citations
Semantic Scholar
Post-adjuvant chemotherapy CA19-9 levels predict prognosis in patients with pancreatic ductal adenocarcinoma: A retrospective cohort study.
H. Imaoka, Y. Shimizu, Y. Senda, S. Natsume +9 more
2016Pancreatology : official journal of the International Association of Pancreatology (IAP) ... [et al.]39 citations
Semantic Scholar
Benefits of side‐by‐side deployment of 6‐mm covered self‐expandable metal stents for hilar malignant biliary obstructions
Tsukasa Yoshida, K. Hara, H. Imaoka, S. Hijioka +6 more
2016Journal of hepato-biliary-pancreatic sciences39 citations
Semantic Scholar
Risk factors for postoperative recurrence of intraductal papillary mucinous neoplasms of the pancreas based on a long‐term follow‐up study: proposals for follow‐up strategies
Tatsuji Yogi, S. Hijioka, H. Imaoka, N. Mizuno +12 more
2015Journal of hepato-biliary-pancreatic sciences36 citations
Semantic Scholar
Clinical impact of preoperative endoscopic ultrasound-guided fine-needle aspiration for pancreatic ductal adenocarcinoma
Hideharu Tsutsumi, K. Hara, N. Mizuno, S. Hijioka +9 more
2016Endoscopic Ultrasound32 citations Open access
Semantic Scholar
Prognostic Impact of Sarcopenic Obesity after Neoadjuvant Chemotherapy Followed by Surgery in Elderly Patients with Esophageal Squamous Cell Carcinoma
S. Onishi, M. Tajika, Tsutomu Tanaka, Keisaku Yamada +7 more
2020Journal of Clinical Medicine31 citations Open access
Semantic Scholar
Clinical results of definitive chemoradiotherapy for cervical esophageal cancer: Comparison of failure pattern and toxicities between intensity‐modulated radiotherapy and 3‐dimensional conformal radiotherapy
Makoto Ito, T. Kodaira, H. Tachibana, N. Tomita +8 more
2017Head and Neck31 citations
Semantic Scholar
Gastroduodenal stenting with Niti‐S stent: Long‐term benefits and additional stent intervention
Takamitsu Sato, K. Hara, N. Mizuno, S. Hijioka +13 more
2015Digestive Endoscopy29 citations Open access
Semantic Scholar
Comparison of prognosis between observation and surgical resection groups with small sporadic non-functional pancreatic neuroendocrine neoplasms without distant metastasis
Y. Kurita, K. Hara, Takamichi Kuwahara, N. Mizuno +9 more
2019Journal of gastroenterology28 citations
Semantic Scholar
Risk factor analysis for adverse events and stent dysfunction of endoscopic ultrasound‐guided choledochoduodenostomy
S. Matsumoto, K. Hara, N. Mizuno, Takamichi Kuwahara +10 more
2019Digestive Endoscopy26 citations
Semantic Scholar
Prognostic Significance of Sarcopenia in Patients with Unresectable Advanced Esophageal Cancer
S. Onishi, M. Tajika, Tsutomu Tanaka, Y. Hirayama +10 more
2019Journal of Clinical Medicine26 citations Open access
Semantic Scholar
Across-Site Differences in the Mechanism of Alcohol-Induced Digestive Tract Carcinogenesis: An Evaluation by Mediation Analysis
Y. Koyanagi, Etsuji Suzuki, I. Imoto, Yumiko Kasugai +17 more
2020Cancer Research25 citations
Semantic Scholar
Long-Term Outcome of Patients with Locally Advanced Clinically Unresectable Esophageal Cancer Undergoing Conversion Surgery after Induction Chemotherapy with Docetaxel Plus Cisplatin and 5-Fluorouracil
T. Abe, E. Higaki, T. Hosoi, T. Nagao +7 more
2020Annals of Surgical Oncology25 citations
Semantic Scholar
Usefulness of septal thickness measurement on endoscopic ultrasound as a predictor of malignancy of branched‐duct and mixed‐type intraductal papillary mucinous neoplasm of the pancreas
Hiromichi Iwaya, S. Hijioka, N. Mizuno, Takamichi Kuwahara +16 more
2019Digestive Endoscopy24 citations
Semantic Scholar
Features of chronic pancreatitis by endoscopic ultrasound influence the diagnostic accuracy of endoscopic ultrasound‐guided fine‐needle aspiration of small pancreatic lesions
Y. Kurita, Takamichi Kuwahara, K. Hara, N. Mizuno +9 more
2020Digestive Endoscopy23 citations
Semantic Scholar
Risks of transesophageal endoscopic ultrasonography-guided biliary drainage
Nozomi Okuno, K. Hara, N. Mizuno, S. Hijioka +7 more
201723 citations Open access
Semantic Scholar
Impact of docetaxel in addition to cisplatin and fluorouracil as neoadjuvant treatment for resectable stage III or T3 esophageal cancer: a propensity score-matched analysis
M. Nomura, I. Oze, T. Abe, A. Komori +14 more
2015Cancer Chemotherapy and Pharmacology23 citations
Semantic Scholar
Early tumor shrinkage and depth of response in patients with advanced gastric cancer: a retrospective analysis of a randomized phase III study of first-line S-1 plus oxaliplatin vs. S-1 plus cisplatin
T. Nishina, M. Azuma, K. Nishikawa, M. Gotoh +18 more
2018Gastric Cancer22 citations Open access
Semantic Scholar
Incidence and treatment of metachronous gastric cancer after proximal gastrectomy
Y. Iwata, S. Ito, Kazunari Misawa, Yuichi Ito +7 more
2018Surgery today (Print)20 citations
Semantic Scholar
Endoscopic Ultrasound-guided Rendezvous Technique after Failed Endoscopic Retrograde Cholangiopancreatography: Which Approach Route Is the Best?
Nozomi Okuno, K. Hara, N. Mizuno, S. Hijioka +7 more
2017Internal medicine20 citations Open access
Semantic Scholar
Comparison between surgery and definitive chemoradiotherapy for patients with resectable esophageal squamous cell carcinoma: a propensity score analysis
M. Nomura, I. Oze, T. Kodaira, T. Abe +13 more
2016International Journal of Clinical Oncology20 citations
Semantic Scholar
Outcomes of EUS-guided choledochoduodenostomy as primary drainage for distal biliary obstruction with covered self-expandable metallic stents
N. Kuraoka, K. Hara, Nozomi Okuno, Takamichi Kuwahara +4 more
2020Endoscopy International Open19 citations Open access
Semantic Scholar
A Randomized Controlled Trial Evaluating a Low-Volume PEG Solution Plus Ascorbic Acid versus Standard PEG Solution in Bowel Preparation for Colonoscopy
M. Tajika, Tsutomu Tanaka, Makoto Ishihara, N. Mizuno +14 more
2015Gastroenterology Research and Practice19 citations Open access
Semantic Scholar
Outcomes of EUS-FNA in patients receiving antithrombotic therapy
Petcharee Polmanee, K. Hara, N. Mizuno, S. Hijioka +14 more
2019Endoscopy International Open18 citations Open access
Semantic Scholar
Ursodeoxycholic acid and bezafibrate were useful for steroid-refractory, immune-related hepatitis: a case report
S. Onishi, M. Tajika, H. Bando, Y. Matsubara +3 more
2020Journal of Medical Case Reports17 citations Open access
Semantic Scholar
Long-term outcomes of metachronous neoplasms in the ileal pouch and rectum after surgical treatment in patients with familial adenomatous polyposis
M. Tajika, Tsutomu Tanaka, Makoto Ishihara, Y. Hirayama +12 more
2019Endoscopy International Open17 citations Open access
Semantic Scholar
Treatment of biliary strictures with fully covered self-expandable metal stents after pancreaticoduodenectomy
H. Shibuya, K. Hara, N. Mizuno, S. Hijioka +14 more
2016Endoscopy17 citations
Semantic Scholar
Sex differences in the safety of S‐1 plus oxaliplatin and S‐1 plus cisplatin for patients with metastatic gastric cancer
Yasuhide Yamada, W. Koizumi, K. Nishikawa, M. Gotoh +16 more
2019Cancer Science16 citations Open access
Semantic Scholar
Prognostic factors for salvage endoscopic resection for esophageal squamous cell carcinoma after chemoradiotherapy or radiotherapy alone
Shinya Kondo, M. Tajika, Tsutomu Tanaka, T. Kodaira +7 more
2016Endoscopy International Open16 citations Open access
Semantic Scholar
Depth of response predicts the clinical outcome of advanced HER2-positive gastric cancer to trastuzumab-based first-line chemotherapy
S. Kadowaki, T. Masuishi, T. Eto, Y. Narita +7 more
2017Cancer Chemotherapy and Pharmacology15 citations
Semantic Scholar
Meta-analysis supporting noninferiority of oxaliplatin plus S-1 to cisplatin plus S-1 in first-line treatment of advanced gastric cancer (G-SOX study): indirect comparison with S-1 alone
C. Hamada, Yasuhide Yamada, M. Azuma, K. Nishikawa +18 more
2016International Journal of Clinical Oncology15 citations
Semantic Scholar
Correlation between human epidermal growth factor receptor 2 expression level and efficacy of trastuzumab beyond progression in metastatic gastric cancer.
Y. Narita, S. Kadowaki, T. Masuishi, H. Taniguchi +11 more
2017Oncology Letters14 citations Open access
Semantic Scholar
Type of Combined Endoscopic Biliary and Gastroduodenal Stenting Is Significant for Biliary Route Maintenance.
Takamitsu Sato, K. Hara, N. Mizuno, S. Hijioka +11 more
2016Internal medicine14 citations Open access
Semantic Scholar
Effect of Body Composition Change during Neoadjuvant Chemotherapy for Esophageal Squamous Cell Carcinoma
S. Onishi, M. Tajika, Tsutomu Tanaka, Keisaku Yamada +9 more
2022Journal of Clinical Medicine13 citations Open access
Semantic Scholar
Identification of Blood-Based Biomarkers for the Prediction of the Response to Neoadjuvant Chemoradiation in Rectal Cancer
D. Dayde, J. Gunther, Y. Hirayama, D. Weksberg +18 more
2021Cancers13 citations Open access
Semantic Scholar

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M. Tajika×39
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M. Tajika — researcher profile on SciRah
N. Mizuno×28
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N. Mizuno — researcher profile on SciRah
Tsutomu Tanaka×27
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Tsutomu Tanaka — researcher profile on SciRah
K. Hara×27
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K. Hara — researcher profile on SciRah

Makoto Ishihara

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Makoto Ishihara — researcher profile on SciRah

Nozomi Okuno×19

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Nozomi Okuno — researcher profile on SciRah

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Y. Shimizu — researcher profile on SciRah

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S. Hijioka — researcher profile on SciRah

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K. Yamao — researcher profile on SciRah

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H. Imaoka — researcher profile on SciRah

Takamichi Kuwahara×13

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Takamichi Kuwahara — researcher profile on SciRah

Y. Hirayama×11

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Y. Hirayama — researcher profile on SciRah