Koji Okabayashi

5.0k total citations
177 papers, 3.0k citations indexed

About

Koji Okabayashi is a scholar working on Oncology, Surgery and Molecular Biology. According to data from OpenAlex, Koji Okabayashi has authored 177 papers receiving a total of 3.0k indexed citations (citations by other indexed papers that have themselves been cited), including 80 papers in Oncology, 73 papers in Surgery and 42 papers in Molecular Biology. Recurrent topics in Koji Okabayashi's work include Colorectal Cancer Surgical Treatments (45 papers), Colorectal Cancer Treatments and Studies (23 papers) and Gastric Cancer Management and Outcomes (14 papers). Koji Okabayashi is often cited by papers focused on Colorectal Cancer Surgical Treatments (45 papers), Colorectal Cancer Treatments and Studies (23 papers) and Gastric Cancer Management and Outcomes (14 papers). Koji Okabayashi collaborates with scholars based in Japan, United Kingdom and United States. Koji Okabayashi's co-authors include Hirotoshi Hasegawa, Yuko Kitagawa, Masashi Tsuruta, Makoto Asashima, Kohei Shigeta, Thanos Athanasiou, Hutan Ashrafian, Masashi Yahagi, Ara Darzi and Yoshiyuki Ishii and has published in prestigious journals such as Journal of Clinical Oncology, SHILAP Revista de lepidopterología and PLoS ONE.

In The Last Decade

Koji Okabayashi

154 papers receiving 2.9k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Koji Okabayashi Japan 31 1.2k 1.2k 760 532 294 177 3.0k
Markus Steinbauer Germany 24 804 0.7× 967 0.8× 1.1k 1.4× 718 1.3× 157 0.5× 86 3.3k
Yu Katayose Japan 30 1.4k 1.2× 1.3k 1.1× 810 1.1× 743 1.4× 206 0.7× 148 2.9k
Takao Hinoi Japan 31 1.1k 0.9× 795 0.7× 1.2k 1.6× 549 1.0× 523 1.8× 117 2.9k
Luca Reggiani Bonetti Italy 27 952 0.8× 555 0.5× 613 0.8× 695 1.3× 239 0.8× 161 2.5k
John Slavin Australia 30 1.1k 0.9× 794 0.7× 997 1.3× 831 1.6× 174 0.6× 78 3.5k
Maria A. Pantaleo Italy 33 1.0k 0.8× 930 0.8× 914 1.2× 1.8k 3.3× 170 0.6× 217 4.0k
Ming Zhang China 29 1.2k 1.0× 637 0.5× 751 1.0× 588 1.1× 147 0.5× 167 2.7k
Jean-Michel Vignaud France 32 828 0.7× 526 0.4× 935 1.2× 909 1.7× 210 0.7× 87 2.9k
Tamotsu Kuroki Japan 29 1.1k 0.9× 1.6k 1.3× 1.2k 1.6× 644 1.2× 668 2.3× 227 3.3k
Morihisa Hirota Japan 36 2.2k 1.8× 1.8k 1.5× 1.7k 2.2× 530 1.0× 273 0.9× 101 4.3k

Countries citing papers authored by Koji Okabayashi

Since Specialization
Citations

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

Fields of papers citing papers by Koji Okabayashi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koji Okabayashi

This figure shows the co-authorship network connecting the top 25 collaborators of Koji Okabayashi. A scholar is included among the top collaborators of Koji Okabayashi 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 Koji Okabayashi. Koji Okabayashi 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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Sugimoto, Shinya, Tatsuya Suzuki, Hiroki Kiyohara, et al.. (2025). Characterization of Computed Tomography Colonography Findings of Ulcerative Colitis-Associated Neoplasia. Inflammatory Bowel Diseases.
3.
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Matsuura, Noriko, Motohiko Kato, Kentarô Iwata, et al.. (2024). Endoscopic ultrasound classification for prediction of endoscopic submucosal dissection resectability: PREDICT classification. SHILAP Revista de lepidopterología. 12(9). E1075–E1084.
5.
Seishima, Ryo, et al.. (2024). POFUT1 and PLAGL2 are characteristic markers of mucinous colorectal cancer associated with MUC2 expression. Cell Biochemistry and Function. 42(2). e3989–e3989. 1 indexed citations
6.
Seishima, Ryo, Juntaro Yamasaki, Kohei Shigeta, et al.. (2022). Angiopoietin-like 4 promotes glucose metabolism by regulating glucose transporter expression in colorectal cancer. Journal of Cancer Research and Clinical Oncology. 148(6). 1351–1361. 13 indexed citations
7.
Tsuruta, Masashi, Koji Okabayashi, Kohei Shigeta, et al.. (2021). BAF57 Is a Potential Determinant of Colorectal Cancer Malignancy. Anticancer Research. 41(11). 5445–5452. 1 indexed citations
8.
Tsuruta, Masashi, Koji Okabayashi, Takashi Ishida, et al.. (2020). The Impact of Smoking on Pulmonary Metastasis in Colorectal Cancer. SHILAP Revista de lepidopterología.
9.
Kondo, Takayuki, Masashi Tsuruta, Hirotoshi Hasegawa, et al.. (2017). The use of laparoscopic rectopexy to manage rectal prolapse with Pseudo‐Meigs’ syndrome in a 64‐year‐old female: a case report. Clinical Case Reports. 5(5). 642–644. 1 indexed citations
10.
Tai-Nagara, Ikue, Keisuke Okabe, Yuki Sugiura, et al.. (2017). Placental labyrinth formation in mice requires endothelial FLRT2–UNC5B signaling. Development. 144(13). 2392–2401. 22 indexed citations
11.
Currie, Andrew, George Malietzis, John T. Jenkins, et al.. (2016). Network meta-analysis of protocol-driven care and laparoscopic surgery for colorectal cancer. British journal of surgery. 103(13). 1783–1794. 22 indexed citations
12.
Nagayama, Aiko, Tetsu Hayashida, Hiromitsu Jinno, et al.. (2014). Comparative Effectiveness of Neoadjuvant Therapy for HER2–Positive Breast Cancer: A Network Meta-Analysis. JNCI Journal of the National Cancer Institute. 106(9). 57 indexed citations
13.
Koyanagi, Kazuo, Motohito Nakagawa, Keigo Matsumoto, et al.. (2011). A Case of Sciatic Hernia Incarcerated through Lesser Sciatic Foramen. The Japanese Journal of Gastroenterological Surgery. 44(4). 504–509. 1 indexed citations
14.
Yamada, Shuhei, Masayuki Onishi, Reiko Fujinawa, et al.. (2009). Structural and functional changes of sulfated glycosaminoglycans in Xenopus laevis during embryogenesis. Glycobiology. 19(5). 488–498. 13 indexed citations
15.
Nakagawa, Motohito, Makoto Takeda, Koji Okabayashi, et al.. (2009). STUDY OF INGUINAL HERNIA FOLLOWING RADICAL RETROPUBIC PROSTATECTOMY. Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association). 70(2). 363–367. 2 indexed citations
16.
Seishima, Ryo, et al.. (2008). A RAPIDLY GROWING LESION OF PULMONARY CRYPTOCOCCOSIS MIMICKING A METASTATIC LUNG TUMOR. Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association). 69(11). 2827–2831.
17.
Tsuruta, Masashi, Hirotoshi Hasegawa, Hideki Nishibori, et al.. (2007). A Case of Sister Mary Joseph's Nodule. The Japanese Journal of Gastroenterological Surgery. 40(4). 517–521. 4 indexed citations
18.
Tsuruta, Masashi, Hideki Nishibori, Hirotoshi Hasegawa, et al.. (2006). Heat shock protein 27 is involved in acquisition of 5-FU resistance in human colon cancer. Cancer Research. 66. 882–883. 1 indexed citations
19.
Kurisaki, Akira, Tatsuo S. Hamazaki, Koji Okabayashi, et al.. (2005). Chromatin-related proteins in pluripotent mouse embryonic stem cells are downregulated after removal of leukemia inhibitory factor. Biochemical and Biophysical Research Communications. 335(3). 667–675. 33 indexed citations
20.
Nakajima, Takahiro, Koji Okabayashi, Hiroaki Nakazato, et al.. (1994). Adjuvant chemotherapy with MFC-related regimens for patients with gastric cancer after curative gastrectomy. 29(4). 654–662. 2 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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