Yukiyasu Okamura

5.2k total citations · 1 hit paper
213 papers, 3.6k citations indexed

About

Yukiyasu Okamura is a scholar working on Surgery, Oncology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Yukiyasu Okamura has authored 213 papers receiving a total of 3.6k indexed citations (citations by other indexed papers that have themselves been cited), including 135 papers in Surgery, 120 papers in Oncology and 82 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Yukiyasu Okamura's work include Pancreatic and Hepatic Oncology Research (93 papers), Cholangiocarcinoma and Gallbladder Cancer Studies (71 papers) and Hepatocellular Carcinoma Treatment and Prognosis (47 papers). Yukiyasu Okamura is often cited by papers focused on Pancreatic and Hepatic Oncology Research (93 papers), Cholangiocarcinoma and Gallbladder Cancer Studies (71 papers) and Hepatocellular Carcinoma Treatment and Prognosis (47 papers). Yukiyasu Okamura collaborates with scholars based in Japan, Italy and Türkiye. Yukiyasu Okamura's co-authors include Katsuhiko Uesaka, Teiichi Sugiura, Ryo Ashida, Takaaki Ito, Yusuke Yamamoto, Katsuhisa Ohgi, Hiroyuki Sugimoto, Shuji Nomoto, Tsutomu Fujii and Shin Takeda and has published in prestigious journals such as The Lancet, Nucleic Acids Research and Journal of Clinical Oncology.

In The Last Decade

Yukiyasu Okamura

191 papers receiving 3.6k citations

Hit Papers

Adjuvant chemotherapy of S-1 versus gemcitabine for resec... 2016 2026 2019 2022 2016 200 400 600
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Adjuvant chemotherapy of S-1 versus gemcitabine for resected pancreatic cancer: a phase 3, open-label, randomised, non-inferiority trial (JASPAC 01)
    2016 742 citations Katsuhiko Uesaka, Yukiyasu Okamura et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Yukiyasu Okamura Japan 28 2.3k 1.7k 1.2k 811 726 213 3.6k
Olivıer Turrini France 34 2.9k 1.3× 1.7k 1.1× 1.2k 1.0× 790 1.0× 689 0.9× 163 3.6k
Yuji Kaneoka Japan 29 1.6k 0.7× 1.5k 0.9× 934 0.8× 1.1k 1.3× 574 0.8× 167 3.3k
Heinz‐Josef Klümpen Netherlands 30 1.6k 0.7× 1.2k 0.7× 983 0.8× 903 1.1× 408 0.6× 154 3.3k
Carl Zuelke Germany 9 2.2k 0.9× 1.1k 0.7× 807 0.7× 881 1.1× 689 0.9× 14 3.4k
Aaron R. Sasson United States 33 2.1k 0.9× 1.2k 0.7× 646 0.5× 526 0.6× 809 1.1× 82 3.4k
Masaji Hashimoto Japan 26 953 0.4× 1.1k 0.7× 890 0.7× 722 0.9× 531 0.7× 208 3.1k
Ki Byung Song South Korea 31 3.0k 1.3× 1.7k 1.1× 1.5k 1.2× 943 1.2× 593 0.8× 183 4.2k
Sven Arke Lang Germany 25 1.2k 0.5× 1.4k 0.9× 463 0.4× 586 0.7× 331 0.5× 112 2.9k
Masato Kayahara Japan 40 2.8k 1.2× 2.2k 1.3× 1.5k 1.3× 857 1.1× 600 0.8× 170 4.3k
Lipika Goyal United States 31 2.5k 1.1× 2.3k 1.4× 1.4k 1.1× 764 0.9× 854 1.2× 185 5.1k

Countries citing papers authored by Yukiyasu Okamura

Since Specialization
Citations

This map shows the geographic impact of Yukiyasu Okamura's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Yukiyasu Okamura with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Yukiyasu Okamura more than expected).

Fields of papers citing papers by Yukiyasu Okamura

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Yukiyasu Okamura. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Yukiyasu Okamura. The network helps show where Yukiyasu Okamura may publish in the future.

Co-authorship network of co-authors of Yukiyasu Okamura

This figure shows the co-authorship network connecting the top 25 collaborators of Yukiyasu Okamura. A scholar is included among the top collaborators of Yukiyasu Okamura based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Yukiyasu Okamura. Yukiyasu Okamura is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
2.
Masuda, Yoshio, et al.. (2025). Age, growth, and maturation of the Japanese dwarf squid Loliolus japonicus in Sendai Bay. Fisheries Science. 91(3). 495–509.
3.
Wang, Jane, Amir Ashraf‐Ganjouei, Núria Lluís, et al.. (2025). Development and Validation of a Machine Learning Prediction Model for Textbook Outcome in Liver Surgery: Results From a Multicenter, International Cohort. Annals of Surgery Open. 6(1). e539–e539. 1 indexed citations
4.
Kawaguchi, Yoshikuni, Kiyoshi Hasegawa, Kosuke Kashiwabara, et al.. (2025). Surgery Versus Ablation for Hepatocellular Carcinoma: A Randomized Controlled Trial (SURF-RCT Trial) and a Nonrandomized Prospective Observational Trial (SURF-Cohort Trial). Journal of Clinical Oncology. 43(23). 2628–2638. 2 indexed citations
5.
Aramaki, Osamu, et al.. (2024). Transanal Decompression Tube Placement for Treatment of Sigmoid Volvulus. SHILAP Revista de lepidopterología. 8(4). 305–315.
6.
Imamura, Taisuke, Ryo Ashida, Kenichi Urakami, et al.. (2024). Comprehensive sequencing of circulating tumour DNA in resectable pancreatic cancer. British journal of surgery. 111(3). 1 indexed citations
7.
Ohgi, Katsuhisa, Teiichi Sugiura, Yukiyasu Okamura, et al.. (2023). Long-term adjuvant chemotherapy after resection for pancreatic cancer patients with positive peritoneal lavage cytology. Langenbeck s Archives of Surgery. 408(1). 165–165. 5 indexed citations
8.
9.
Ashida, Ryo, Yusuke Yamamoto, Takeshi Aramaki, et al.. (2022). Preoperative skeletal muscle fat infiltration is a strong predictor of poorer survival in gallbladder cancer underwent surgery. Clinical Nutrition ESPEN. 52. 60–67. 5 indexed citations
10.
Ohgi, Katsuhisa, Teiichi Sugiura, Yukiyasu Okamura, et al.. (2021). Changes in the body composition and nutritional status after total pancreatectomy. Langenbeck s Archives of Surgery. 406(6). 1909–1916. 2 indexed citations
11.
Ito, Takaaki, Teiichi Sugiura, Yukiyasu Okamura, et al.. (2019). The Safety and Survival Outcome of Hepatectomy with Combined Bile Duct Resection for Colorectal Liver Metastasis. World Journal of Surgery. 44(4). 1231–1243.
12.
Matsubayashi, Hiroyuki, Hirotoshi Ishiwatari, Katsuhiko Uesaka, et al.. (2019). An Intra-abdominal Solid-cystic Desmoid That Emerged after Distal Gastrectomy. Internal Medicine. 58(24). 3525–3529. 1 indexed citations
13.
14.
Ito, Takaaki, Teiichi Sugiura, Yukiyasu Okamura, et al.. (2017). The diagnostic advantage of EOB-MR imaging over CT in the detection of liver metastasis in patients with potentially resectable pancreatic cancer. Pancreatology. 17(3). 451–456. 37 indexed citations
15.
Türkoğlu, Mehmet Akif, Yusuke Yamamoto, Teiichi Sugiura, et al.. (2016). The favorable prognosis after operative resection of hypervascular intrahepatic cholangiocarcinoma: A clinicopathologic and immunohistochemical study. Surgery. 160(3). 683–690. 26 indexed citations
16.
Fujii, Tsutomu, Suguru Yamada, Kenta Murotani, et al.. (2015). Oral Food Intake Versus Fasting on Postoperative Pancreatic Fistula After Distal Pancreatectomy. Medicine. 94(52). e2398–e2398. 9 indexed citations
17.
Oya, Hisaharu, Mitsuro Kanda, Hiroyuki Sugimoto, et al.. (2014). Dihydropyrimidinase-like 3 is a putative hepatocellular carcinoma tumor suppressor. Journal of Gastroenterology. 50(5). 590–600. 32 indexed citations
18.
Maehira, Hiromitsu, Teiichi Sugiura, Yukiyasu Okamura, et al.. (2013). A Case of Adenosquamous Carcinoma of the Extrahepatic Bile Duct with Portal Vein Tumor Thrombus. The Japanese Journal of Gastroenterological Surgery. 46(2). 98–105. 1 indexed citations
19.
Okamura, Yukiyasu, Shuji Nomoto, Mitsuro Kanda, et al.. (2009). Leukemia inhibitory factor receptor (LIFR) is detected as a novel suppressor gene of hepatocellular carcinoma using double-combination array. Cancer Letters. 289(2). 170–177. 48 indexed citations
20.
Okamura, Yukiyasu, Akio Harada, Yoshikuni Inokawa, et al.. (2007). The Utility of Abdominal CT to Judge the Operative Indication for Upper Gastrointestinal Tract Ulcer Perforation. The Japanese Journal of Gastroenterological Surgery. 40(5). 529–535. 3 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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