Masayoshi Okumi

3.1k total citations
186 papers, 2.1k citations indexed

About

Masayoshi Okumi is a scholar working on Surgery, Transplantation and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Masayoshi Okumi has authored 186 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 70 papers in Surgery, 63 papers in Transplantation and 48 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Masayoshi Okumi's work include Renal Transplantation Outcomes and Treatments (63 papers), Renal cell carcinoma treatment (28 papers) and Organ Transplantation Techniques and Outcomes (23 papers). Masayoshi Okumi is often cited by papers focused on Renal Transplantation Outcomes and Treatments (63 papers), Renal cell carcinoma treatment (28 papers) and Organ Transplantation Techniques and Outcomes (23 papers). Masayoshi Okumi collaborates with scholars based in Japan, United States and Australia. Masayoshi Okumi's co-authors include Kazunari Tanabe, Yoichi Kakuta, Norio Nonomura, Hideki Ishida, Toshio Takagi, Shiro Takahara, Junpei Iizuka, Yoshitaka Isaka, Kazuhiko Yamada and Kazuhiko Yoshida and has published in prestigious journals such as Proceedings of the National Academy of Sciences, SHILAP Revista de lepidopterología and The Journal of Immunology.

In The Last Decade

Masayoshi Okumi

170 papers receiving 2.0k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Masayoshi Okumi Japan	26	792	587	456	441	371	186	2.1k
Mark Denton United States	20	562 0.7×	503 0.9×	339 0.7×	283 0.6×	419 1.1×	54	2.0k
Alexander F. Schaapherder Netherlands	31	1.8k 2.2×	566 1.0×	433 0.9×	497 1.1×	472 1.3×	90	3.0k
Barbara Infante Italy	24	557 0.7×	609 1.0×	240 0.5×	649 1.5×	390 1.1×	72	2.2k
David A. Laskow United States	21	753 1.0×	1.1k 1.9×	249 0.5×	402 0.9×	155 0.4×	50	2.1k
Shane M. Meehan United States	27	601 0.8×	611 1.0×	548 1.2×	515 1.2×	515 1.4×	57	3.4k
Oliver Drognitz Germany	19	639 0.8×	386 0.7×	175 0.4×	344 0.8×	140 0.4×	54	1.3k
Lorna Marson United Kingdom	21	438 0.6×	197 0.3×	262 0.6×	336 0.8×	537 1.4×	48	1.5k
Matthias Behrend Germany	24	976 1.2×	629 1.1×	349 0.8×	281 0.6×	209 0.6×	79	2.1k
G Proud United Kingdom	24	781 1.0×	510 0.9×	432 0.9×	270 0.6×	128 0.3×	104	2.0k
Antonio Schena Italy	18	464 0.6×	716 1.2×	124 0.3×	512 1.2×	198 0.5×	43	1.8k

Countries citing papers authored by Masayoshi Okumi

Since Specialization

Citations

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

Fields of papers citing papers by Masayoshi Okumi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Masayoshi Okumi

This figure shows the co-authorship network connecting the top 25 collaborators of Masayoshi Okumi. A scholar is included among the top collaborators of Masayoshi Okumi 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 Masayoshi Okumi. Masayoshi Okumi 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

Kang, Hee Gyung, Danny Hsu, Noritoshi Kato, et al.. (2025). Management of Atypical Haemolytic Uraemic Syndrome With Triggers: Diagnostic and Treatment Algorithms From an Asia‐Pacific Perspective. Nephrology. 30(9). e70116–e70116.

Tsujimoto, Masashi, Yumiko Saito, Masatomo Kaneko, et al.. (2025). MRI‐Determined Tumor Contact Area as a Predictor of Pathological Extraprostatic Extension in Clinical T2 Prostate Cancer. PubMed. 2025(1). 9165949–9165949.

Yamazaki, Hideya, Gen Suzuki, Koji Masui, et al.. (2024). The influence of Gleason score ≤ 6 histology on the outcome of high-risk localized prostate cancer after modern radiotherapy. Scientific Reports. 14(1). 8011–8011. 1 indexed citations

Yamada, Takeshi, Takashi Ueda, Takumi Shiraishi, et al.. (2024). Robot‐assisted radical cystectomy using real‐time transrectal ultrasound guidance in a patient who had radical prostatectomy and salvage external beam radiation therapy. IJU Case Reports. 8(1). 28–31.

Okumi, Masayoshi, Shigeru Horita, Kohei Unagami, et al.. (2020). Glomerular Neovascularization in Nondiabetic Renal Allograft Is Associated with Calcineurin Inhibitor Toxicity. The Nephron journals/Nephron journals. 144(Suppl. 1). 37–42.

Tsuchimoto, Akihiro, Kenji Ueki, Yuta Matsukuma, et al.. (2020). Significance of revised criteria for chronic active T cell–mediated rejection in the 2017 Banff classification: Surveillance by 1-year protocol biopsies for kidney transplantation. American Journal of Transplantation. 21(1). 174–185. 13 indexed citations

Ishihara, Hiroki, Toshio Takagi, Tsunenori Kondo, et al.. (2020). Assessing improvements in metastatic renal cell carcinoma systemic treatments from the pre-cytokine to the immune checkpoint inhibitor eras: a retrospective analysis of real-world data. Japanese Journal of Clinical Oncology. 51(5). 793–801. 9 indexed citations

Ishihara, Hiroki, Toshio Takagi, Tsunenori Kondo, et al.. (2020). Prognostic impact of systemic therapy change in metastatic renal cell carcinoma treated with cytoreductive nephrectomy. Japanese Journal of Clinical Oncology. 51(2). 296–304. 3 indexed citations

Ishihara, Hiroki, Toshio Takagi, Tsunenori Kondo, et al.. (2019). Association between immune-related adverse events and prognosis in patients with metastatic renal cell carcinoma treated with nivolumab. Urologic Oncology Seminars and Original Investigations. 37(6). 355.e21–355.e29. 81 indexed citations

10.

Kakuta, Yoichi, Masayoshi Okumi, Kohei Unagami, et al.. (2019). Outcomes, complications, and economic impact of ABO‐incompatible living kidney transplantation: A single‐center Japanese cohort study. Clinical Transplantation. 33(6). e13591–e13591. 6 indexed citations

11.

Ikeda, Takashi, Hiroki Ishihara, Toshio Takagi, et al.. (2019). The De Ritis (Aspartate Transaminase/Alanine Transaminase) Ratio as a Prognosticator in Patients With End-stage Renal Disease–associated Renal Cell Carcinoma. Clinical Genitourinary Cancer. 18(3). 236–240.e1. 10 indexed citations

12.

Ishihara, Hiroki, Toshio Takagi, Tsunenori Kondo, et al.. (2019). Correlation between the magnitude of best tumor response and patient survival in nivolumab therapy for metastatic renal cell carcinoma. Medical Oncology. 36(4). 35–35. 6 indexed citations

13.

Ishihara, Hiroki, Toshio Takagi, Tsunenori Kondo, et al.. (2019). Efficacy and safety of axitinib for metastatic renal cell carcinoma in patients on hemodialysis for end‐stage renal disease: Case series of eight patients. International Journal of Urology. 26(11). 1081–1082. 7 indexed citations

14.

Ishihara, Hiroki, Toshio Takagi, Tsunenori Kondo, et al.. (2019). Predictive impact of an early change in serum C-reactive protein levels in nivolumab therapy for metastatic renal cell carcinoma. Urologic Oncology Seminars and Original Investigations. 38(5). 526–532. 21 indexed citations

15.

Ishihara, Hiroki, Hidekazu Tachibana, Toshio Takagi, et al.. (2019). Predictive Impact of Peripheral Blood Markers and C-Reactive Protein in Nivolumab Therapy for Metastatic Renal Cell Carcinoma. Targeted Oncology. 14(4). 453–463. 53 indexed citations

16.

Kobayashi, Akira, Izumi Yamamoto, Yudo Tanno, et al.. (2017). Clinicopathologic Impact of Early Medullary Ray Injury in Patients Following Kidney Transplantation. Transplantation Proceedings. 49(1). 78–83. 1 indexed citations

17.

Okumi, Masayoshi, Yasuyuki Sato, Kohei Unagami, et al.. (2016). Preemptive kidney transplantation: a propensity score matched cohort study. Clinical and Experimental Nephrology. 21(6). 1105–1112. 10 indexed citations

18.

Obi, Yoshitsugu, Naotsugu Ichimaru, Takayuki Hamano, et al.. (2012). Orally Active Vitamin D for Potential Chemoprevention of Posttransplant Malignancy. Cancer Prevention Research. 5(10). 1229–1235. 14 indexed citations

19.

Okumi, Masayoshi, et al.. (2011). [A case of androgen insensitivity syndrome (AIS) treated by Laparoendoscopic single site surgery (LESS)].. PubMed. 57(11). 657–60. 1 indexed citations

20.

Okumi, Masayoshi, et al.. (2001). [A case of renal cell carcinoma arising in bilateral original kidneys after failure of transplant graft function].. PubMed. 47(9). 637–40. 1 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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