Eijiro Okajima

1.2k total citations
64 papers, 901 citations indexed

About

Eijiro Okajima is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Molecular Biology. According to data from OpenAlex, Eijiro Okajima has authored 64 papers receiving a total of 901 indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Surgery, 26 papers in Pulmonary and Respiratory Medicine and 18 papers in Molecular Biology. Recurrent topics in Eijiro Okajima's work include Bladder and Urothelial Cancer Treatments (22 papers), Prostate Cancer Treatment and Research (13 papers) and Urinary and Genital Oncology Studies (12 papers). Eijiro Okajima is often cited by papers focused on Bladder and Urothelial Cancer Treatments (22 papers), Prostate Cancer Treatment and Research (13 papers) and Urinary and Genital Oncology Studies (12 papers). Eijiro Okajima collaborates with scholars based in Japan, United States and United Kingdom. Eijiro Okajima's co-authors include Yoichi Konishi, Yoshihiko Hirao, Ayumi Denda, Kiyohide Fujimoto, Hiroyuki Akai, Wakashi Kitayama, Unnur P. Thorgeirsson, Nobumichi Tanaka, Seiichiro Ozono and Masahiro Tsutsumi and has published in prestigious journals such as Biochemical and Biophysical Research Communications, The Journal of Urology and British Journal of Cancer.

In The Last Decade

Eijiro Okajima

60 papers receiving 875 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Eijiro Okajima Japan	19	327	312	259	209	131	64	901
Reiko Masunaga Japan	14	223 0.7×	441 1.4×	496 1.9×	259 1.2×	201 1.5×	20	1.0k
Junichi Kaganoi Japan	20	380 1.2×	299 1.0×	215 0.8×	381 1.8×	64 0.5×	37	1.0k
Kiyoshi Koshida Japan	19	502 1.5×	219 0.7×	399 1.5×	218 1.0×	98 0.7×	80	1.2k
Atsushi Kawabe Japan	15	270 0.8×	174 0.6×	81 0.3×	239 1.1×	79 0.6×	24	643
Atsushi Itami Japan	22	366 1.1×	519 1.7×	493 1.9×	482 2.3×	70 0.5×	51	1.3k
Salvatore Monti Italy	19	251 0.8×	201 0.6×	336 1.3×	117 0.6×	43 0.3×	38	1.0k
T Noguchi Japan	16	356 1.1×	284 0.9×	432 1.7×	242 1.2×	28 0.2×	32	1.1k
Gerasimos P. Vandoros Greece	14	353 1.1×	138 0.4×	111 0.4×	195 0.9×	87 0.7×	24	797
A Capelli Italy	11	151 0.5×	137 0.4×	61 0.2×	121 0.6×	94 0.7×	34	774
Mi Sun Choe South Korea	12	189 0.6×	111 0.4×	210 0.8×	129 0.6×	121 0.9×	22	655

Countries citing papers authored by Eijiro Okajima

Since Specialization

Citations

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

Fields of papers citing papers by Eijiro Okajima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Eijiro Okajima

This figure shows the co-authorship network connecting the top 25 collaborators of Eijiro Okajima. A scholar is included among the top collaborators of Eijiro Okajima 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 Eijiro Okajima. Eijiro Okajima is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Nishimura, Nobutaka, Makito Miyake, Kota Iida, et al.. (2024). Treatment patterns and prognosis in patients with Bacillus Calmette–Guérin-exposed high-risk non-muscle invasive bladder cancer: a real-world data analysis. World Journal of Urology. 42(1). 185–185. 2 indexed citations

Miyake, Makito, Tatsuki Miyamoto, Atsushi Tomioka, et al.. (2024). A Multicenter, Single-Arm, Prospective Trial to Evaluate Efficacy and Safety of Dose-Dense Methotrexate, Vinblastine, Doxorubicin, and Carboplatin (DD-MVACarbo) Chemotherapy for Cisplatin-Ineligible Patients with Advanced Urothelial Cancer: Study Protocol of the CARBUNCLE Trial. Methods and Protocols. 7(4). 58–58. 1 indexed citations

Negishi, Takahito, Tohru Nakagawa, Naotaka Nishiyama, et al.. (2021). Site-specific Response to Nivolumab in Renal Cell Carcinoma. Anticancer Research. 41(3). 1539–1545. 19 indexed citations

Owari, Takuya, Makito Miyake, Yasushi Nakai, et al.. (2020). External validation of a genitourinary cancer-specific prognostic scoring system to predict survival for patients with bone metastasis (modified B-FOM scoring model): Comparison with other scoring models in terms of accuracy. Journal of bone oncology. 26. 100344–100344. 8 indexed citations

Okajima, Eijiro, et al.. (2016). Angiographic embolisation of a ruptured renal artery aneurysm in a primigravida during the first trimester. Journal of Obstetrics and Gynaecology. 37(2). 1–3. 4 indexed citations

Tomioka, Atsushi, Nobumichi Tanaka, Makito Miyake, et al.. (2014). Nadir PSA level and time to nadir PSA are prognostic factors in patients with metastatic prostate cancer. BMC Urology. 14(1). 33–33. 55 indexed citations

Ikeda, Tomohiro, Nobumichi Tanaka, Keiji Shimada, et al.. (2013). Phosphorylation Status of Fas-associated Death Domain Protein Is Associated With Biochemical Recurrence After Radical Prostatectomy. Urology. 81(3). 607–610. 5 indexed citations

Okajima, Eijiro, Hiroyuki Fujimoto, Yoichi Mizutani, et al.. (2010). Cancer death from non‐muscle invasive bladder cancer: Report of the Japanese Urological Association of data from the 1999–2001 registry in Japan. International Journal of Urology. 17(11). 905–912. 6 indexed citations

Kikuchi, Eiji, Hiroyuki Fujimoto, Yoichi Mizutani, et al.. (2009). Clinical outcome of tumor recurrence for Ta, T1 non‐muscle invasive bladder cancer from the data on registered bladder cancer patients in Japan: 1999–2001 report from the Japanese Urological Association. International Journal of Urology. 16(3). 279–286. 38 indexed citations

10.

Shintaku, Ichiro, Michihiro Satoh, Eijiro Okajima, et al.. (2008). Survival of Metastatic Germ Cell Cancer Patients Assessed by International Germ Cell Consensus Classification in Japan. Japanese Journal of Clinical Oncology. 38(4). 281–287. 21 indexed citations

11.

Kouno, Tsutomu, Masashi Ando, Kan Yonemori, et al.. (2007). Weekly Paclitaxel and Carboplatin against Advanced Transitional Cell Cancer after Failure of a Platinum-Based Regimen. European Urology. 52(4). 1115–1122. 38 indexed citations

12.

Akahane, Manabu, et al.. (2005). Vascular endothelial growth factor‐D is a survival factor for human breast carcinoma cells. International Journal of Cancer. 118(4). 841–849. 20 indexed citations

13.

Okajima, Eijiro, Hirotsugu Uemura, Sayuri Ohnishi, et al.. (2003). Expression of Cyclooxygenase-2 in Primary Superficial Bladder Cancer Tissue may Predict Risk of its Recurrence after Complete Transurethral Resection. Aktuelle Urologie. 34(4). 256–258. 13 indexed citations

14.

Fujimoto, Kiyohide, Satoshi Anai, Eijiro Okajima, et al.. (2003). Chromophobe cell renal carcinoma with acquired cystic disease of the kidney in a long‐term hemodialysis patient. International Journal of Urology. 10(2). 99–102. 4 indexed citations

15.

Kitayama, Wakashi, Ayumi Denda, Eijiro Okajima, Toshifumi Tsujiuchi, & Yoichi Konishi. (1999). Increased expression of cyclooxygenase-2 protein in rat urinary bladder tumors induced by N -butyl- N -(4-hydroxybutyl) nitrosamine. Carcinogenesis. 20(12). 2305–2310. 38 indexed citations

16.

Okajima, Eijiro, Masahiro Tsutsumi, Eigoro Okajima, & Yoichi Konishi. (1997). Cripto expression in human urological tumors. Cancer Letters. 111(1-2). 67–70. 5 indexed citations

17.

Tsutsumi, Masahiro, Toshifumi Tsujiuchi, Fumio Suzuki, et al.. (1997). Shortened telomere length and increased telomerase activity in hamster pancreatic duct adenocarcinomas and cell lines. Molecular Carcinogenesis. 18(3). 153–159. 21 indexed citations

18.

Okajima, Eijiro, et al.. (1996). Infrequent somatic alteration of p16/MTS1 in human primary superficial bladder cancers. Cancer Letters. 103(2). 227–231. 19 indexed citations

19.

Ohashi, Kazuo, Masahiro Tsutsumi, Tomokazu Fukuda, et al.. (1996). Shortened Telomere Length in Hepatocellular Carcinomas and Corresponding Background Liver Tissues of Patients Infected with Hepatitis Virus. Japanese Journal of Cancer Research. 87(5). 419–422. 13 indexed citations

20.

Kotake, T, Masamichi Matsuda, Eijiro Okajima, et al.. (1988). LH-RH Agonist, Zoladex (Goserelin), Depot Formulation in the Treatment of Prostatic Cancer Randomized Dose-Finding Trial in Japan. American Journal of Clinical Oncology. 11. S108–111. 13 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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