Kazuyuki Kojima

5.8k total citations
198 papers, 4.1k citations indexed

About

Kazuyuki Kojima is a scholar working on Pulmonary and Respiratory Medicine, Surgery and Oncology. According to data from OpenAlex, Kazuyuki Kojima has authored 198 papers receiving a total of 4.1k indexed citations (citations by other indexed papers that have themselves been cited), including 79 papers in Pulmonary and Respiratory Medicine, 70 papers in Surgery and 33 papers in Oncology. Recurrent topics in Kazuyuki Kojima's work include Gastric Cancer Management and Outcomes (60 papers), Metastasis and carcinoma case studies (35 papers) and Esophageal and GI Pathology (24 papers). Kazuyuki Kojima is often cited by papers focused on Gastric Cancer Management and Outcomes (60 papers), Metastasis and carcinoma case studies (35 papers) and Esophageal and GI Pathology (24 papers). Kazuyuki Kojima collaborates with scholars based in Japan, United States and South Korea. Kazuyuki Kojima's co-authors include Mikito Inokuchi, Kenichi Sugihara, Tatsuyuki Kawano, Naofumi Tanaka, Hiroyuki Yamada, Keiji Kato, Hamed Akbari, Yukio Kosugi, Yoko Takagi and Naofumi Hayabuchi and has published in prestigious journals such as Journal of Clinical Oncology, SHILAP Revista de lepidopterología and Gastroenterology.

In The Last Decade

Kazuyuki Kojima

185 papers receiving 4.0k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Kazuyuki Kojima Japan 37 1.8k 1.4k 789 777 662 198 4.1k
Roland S. Croner Germany 31 852 0.5× 1.1k 0.8× 827 1.0× 375 0.5× 1.5k 2.3× 230 3.7k
Rita Engenhart‐Cabillic Germany 38 2.7k 1.5× 1.4k 1.1× 538 0.7× 165 0.2× 926 1.4× 193 5.1k
Jeong Youp Park South Korea 34 1.4k 0.8× 1.7k 1.2× 695 0.9× 364 0.5× 1.9k 2.8× 181 3.9k
Koji Arihiro Japan 42 1.8k 1.0× 1.5k 1.1× 1.2k 1.5× 429 0.6× 2.1k 3.2× 350 6.7k
Akihiro Takahashi Japan 39 761 0.4× 662 0.5× 931 1.2× 141 0.2× 1.1k 1.7× 147 4.7k
Takashi Hirai Japan 46 1.9k 1.1× 3.6k 2.6× 673 0.9× 589 0.8× 2.0k 3.1× 370 7.2k
Thomas Schmid Austria 31 1.3k 0.7× 1.3k 0.9× 433 0.5× 98 0.1× 798 1.2× 134 3.4k
Masanobu Nakajima Japan 42 2.1k 1.2× 2.5k 1.8× 1.8k 2.2× 278 0.4× 1.5k 2.3× 253 5.6k
Luca Morelli Italy 32 795 0.4× 1.5k 1.1× 616 0.8× 145 0.2× 1.3k 2.0× 197 3.5k
Nickolas Papanikolaou Greece 35 752 0.4× 1.2k 0.9× 180 0.2× 329 0.4× 676 1.0× 166 3.9k

Countries citing papers authored by Kazuyuki Kojima

Since Specialization
Citations

This map shows the geographic impact of Kazuyuki Kojima'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 Kazuyuki Kojima with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Kazuyuki Kojima more than expected).

Fields of papers citing papers by Kazuyuki Kojima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Kazuyuki Kojima. 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 Kazuyuki Kojima. The network helps show where Kazuyuki Kojima may publish in the future.

Co-authorship network of co-authors of Kazuyuki Kojima

This figure shows the co-authorship network connecting the top 25 collaborators of Kazuyuki Kojima. A scholar is included among the top collaborators of Kazuyuki Kojima 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 Kazuyuki Kojima. Kazuyuki Kojima 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
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Nakamura, Takatoshi, Yasunori Maeda, Norisuke Shibuya, et al.. (2024). Risk Factors for Stoma Outlet Obstruction after Proctocolectomy for Ulcerative Colitis. SHILAP Revista de lepidopterología. 8(1). 18–23. 2 indexed citations
3.
Nakagawa, Masatoshi, Noboru Inoue, Masanobu Nakajima, et al.. (2023). Buried bumper syndrome in percutaneous endoscopic gastrostomy with a jejunal extension tube in patients undergoing levodopa–carbidopa intestinal gel treatment. SHILAP Revista de lepidopterología. 9(1). 213–213. 1 indexed citations
4.
Nakajima, Masanobu, Takeshi Yamaguchi, Masatoshi Nakagawa, et al.. (2021). The Prognostic Significance of Plakophilin-1 Expression in Esophageal Cancer. Anticancer Research. 41(7). 3401–3407. 5 indexed citations
5.
Asai, Kazuhisa, Toyohiko Watanabe, Tomohiro Suzumura, et al.. (2019). A Polymorphism rs6726395 in Nrf2 Contributes to the Development of Emphysema-Associated Age in Smokers Without COPD. Lung. 197(5). 559–564. 2 indexed citations
6.
Inokuchi, Mikito, Hiraku Kumamaru, Masatoshi Nakagawa, et al.. (2019). Feasibility of laparoscopic gastrectomy for patients with poor physical status: a retrospective cohort study based on a nationwide registry database in Japan. Gastric Cancer. 23(2). 310–318. 10 indexed citations
7.
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Inokuchi, Mikito, Yoko Takagi, Toshiaki Ishikawa, et al.. (2016). Cadherin 5 expression correlates with poor survival in human gastric cancer. Journal of Clinical Pathology. 70(3). 217–221. 21 indexed citations
9.
Inokuchi, Mikito, Sho Otsuki, Toshiro Tanioka, et al.. (2016). Postoperative Complications of Laparoscopic Total Gastrectomy versus Open Total Gastrectomy for Gastric Cancer in a Meta-Analysis of High-Quality Case-Controlled Studies. Gastroenterology Research and Practice. 2016. 1–10. 13 indexed citations
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Inokuchi, Mikito, Yoko Takagi, Sho Otsuki, et al.. (2015). Prognostic significance of PAK4 expression in gastric cancer. Journal of Clinical Pathology. 69(7). 580–585. 20 indexed citations
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Inokuchi, Mikito, et al.. (2015). Therapeutic Targeting of Fibroblast Growth Factor Receptors in Gastric Cancer. Gastroenterology Research and Practice. 2015. 1–8. 18 indexed citations
14.
Inokuchi, Mikito, Kazuyuki Kojima, Keiji Kato, Hirofumi Sugita, & Kenichi Sugihara. (2014). Risk Factors for Post-Operative Pulmonary Complications after Gastrectomy for Gastric Cancer. Surgical Infections. 15(3). 314–321. 27 indexed citations
15.
Yamaguchi, Rin, Maki Tanaka, Toshiro Yokoyama, et al.. (2009). Clinicocytopathology of breast cancers with a ring‐like appearance on ultrasonography and/or magnetic resonance imaging. Pathology International. 60(1). 22–26. 4 indexed citations
16.
Kojima, Kazuyuki, Hiroyuki Yamada, Mikito Inokuchi, Tatsuyuki Kawano, & Kenichi Sugihara. (2008). A Comparison of Roux-en-Y and Billroth-I Reconstruction After Laparoscopy-assisted Distal Gastrectomy. Annals of Surgery. 247(6). 962–967. 137 indexed citations
17.
Akbari, Hamed, et al.. (2007). Enhanced Blood Vessels in Laparoscopy by Using Narrow-Band Imaging. Machine Vision and Applications. 244–247. 2 indexed citations
18.
Mori, Kazunori, Tadashi Nakashima, Minoru Hirano, et al.. (1998). Combined Therapy Approach for Carcinoma of the Oropharynx. Comparison with Previous Outcomes.. Practica Oto-Rhino-Laryngologica. 91(3). 291–298. 1 indexed citations
19.
Abe, Toshi, Kazuyuki Kojima, Hiroshi Shoji, et al.. (1998). Invited. Japanese encephalitis. Journal of Magnetic Resonance Imaging. 8(4). 755–761. 32 indexed citations
20.
Murakami, Yoshihiko, Toyojiro Matsuishi, Yushiro Yamashita, et al.. (1998). Baló's concentric sclerosis in a 4-year-old Japanese infant. Brain and Development. 20(4). 250–252. 12 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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