Kohei Omatsu
About
Kohei Omatsu is a scholar working on Obstetrics and Gynecology, Reproductive Medicine and Surgery.
According to data from OpenAlex, Kohei Omatsu has authored 61 papers receiving a total of 561 indexed citations (citations by other indexed papers that have themselves been cited), including 40 papers in Obstetrics and Gynecology, 32 papers in Reproductive Medicine and 18 papers in Surgery. Recurrent topics in Kohei Omatsu's work include Endometrial and Cervical Cancer Treatments (34 papers), Ovarian cancer diagnosis and treatment (29 papers) and Uterine Myomas and Treatments (19 papers). Kohei Omatsu is often cited by papers focused on Endometrial and Cervical Cancer Treatments (34 papers), Ovarian cancer diagnosis and treatment (29 papers) and Uterine Myomas and Treatments (19 papers). Kohei Omatsu collaborates with scholars based in Japan, United States and India. Kohei Omatsu's co-authors include Nobuhiro Takeshima, Hidetaka Nomura, Kazuyoshi Kato, Maki Matoda, Hiroyuki Kanao, Sanshiro Okamoto, Yoichi Aoki, Kenji Umayahara, Terumi Tanigawa and Yuko Sugiyama and has published in prestigious journals such as Nature Communications, Journal of Clinical Oncology and SHILAP Revista de lepidopterología.
In The Last Decade
Kohei Omatsu
58 papers receiving 551 citations
Peers
Kohei Omatsu
Tomoyuki Ichimura Japan
Hidetaka Nomura Japan
Mustafa Zelal Muallem Germany
Lucía González‐Cortijo Spain
Alan C. Schlaerth United States
Shinichi Tate Japan
Anne Lesoin France
Carlos Chaves Faloppa Brazil
Michael A. Bidus United States
María Jesús Rubio Spain
Citations per year, relative to Kohei Omatsu Kohei Omatsu (= 1×)
peers
Tomoyuki Ichimura
Countries citing papers authored by Kohei Omatsu
Since
Specialization
Citations
This map shows the geographic impact of Kohei Omatsu'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 Kohei Omatsu with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Kohei Omatsu more than expected).
Fields of papers citing papers by Kohei Omatsu
Since
Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences
This network shows the impact of papers produced by Kohei Omatsu. 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 Kohei Omatsu. The network helps show where Kohei Omatsu may publish in the future.
Co-authorship network of co-authors of Kohei Omatsu
This figure shows the co-authorship network connecting the top 25 collaborators of Kohei Omatsu. A scholar is included among the top collaborators of Kohei Omatsu 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 Kohei Omatsu. Kohei Omatsu is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
1.
Omatsu, Kohei, et al.. (2025). Challenging and continuing laparoscopic radical hysterectomy for more than 30 Years at a single institution. After the LACC trial, should minimally invasive surgery for early-stage cervical cancer really be discarded?. Taiwanese Journal of Obstetrics and Gynecology. 64(1). 82–85.
2.
Omatsu, Kohei, et al.. (2025). Improvement of Prognostic Outcome in Minimally Invasive Surgery for Stage I Epithelial Ovarian Cancer. Gynecology and Minimally Invasive Therapy. 14(1). 66–71.
3.
Yunokawa, Mayu, et al.. (2023). Retrospective study of the efficacy and safety of docetaxel/carboplatin combination therapy as postoperative adjuvant chemotherapy for nonsquamous cell carcinoma of the cervix. International Journal of Clinical Oncology. 28(10). 1421–1430.
4.
Wang, Xiaofei, Hiroshi Kawachi, Akiko Tonooka, et al.. (2022). Detection of BRCA1 Pathogenic Variant in a 24-Year-Old Endometrial Cancer Patient: Risks of Several Hereditary Tumor Syndromes Assessed Using Germline Multigene Panel Testing. SHILAP Revista de lepidopterología. 15(2). 792–797.
5.
Aoki, Yoichi, Hiroyuki Kanao, Terumi Tanigawa, et al.. (2022). Indocyanine green-guided sentinel lymph node mapping during laparoscopic surgery with vaginal cuff closure but no uterine manipulator for cervical cancer. International Journal of Clinical Oncology. 27(9). 1499–1506.
6.
Kato, Kazuyoshi, Kohei Omatsu, Sanshiro Okamoto, et al.. (2021). Early oral feeding is safe and useful after rectosigmoid resection with anastomosis during cytoreductive surgery for primary ovarian cancer. World Journal of Surgical Oncology. 19(1). 77–77.
7.
Tanigawa, Terumi, Maki Matoda, Yoichi Aoki, et al.. (2020). Continuous Administration of Bevacizumab After Disease Progression in Recurrent Ovarian Cancer: A Retrospective Observational Study. Anticancer Research. 40(9). 5285–5290.
8.
Omatsu, Kohei, Noriyuki Katsumata, Shin Nishio, et al.. (2020). 807O Nivolumab versus gemcitabine or pegylated liposomal doxorubicin for patients with platinum-resistant (advanced or recurrent) ovarian cancer: Open-label, randomized trial in Japan (NINJA trial). Annals of Oncology. 31. S611–S611.
9.
Nomura, Hidetaka, Yuji Tanaka, Sachiho Netsu, et al.. (2020). Surgical outcomes of early-stage primary vaginal nonsquamous cell carcinoma. International Journal of Clinical Oncology. 25(7). 1412–1417.
10.
Gotoh, Osamu, Yuko Sugiyama, Yutaka Takazawa, et al.. (2019). Clinically relevant molecular subtypes and genomic alteration-independent differentiation in gynecologic carcinosarcoma. Nature Communications. 10(1). 4965–4965.
11.
Onda, Takashi, Toyomi Satoh, Toshiaki Saito, et al.. (2018). Comparison of survival between upfront primary debulking surgery versus neoadjuvant chemotherapy for stage III/IV ovarian, tubal and peritoneal cancers in phase III randomized trial: JCOG0602.. Journal of Clinical Oncology. 36(15_suppl). 5500–5500.
12.
Nomura, Hidetaka, Kimihiko Sakamoto, Yoichi Aoki, et al.. (2018). Oral leukoplakia, a precancerous lesion of squamous cell carcinoma, in patients with long-term pegylated liposomal doxorubicin treatment. Medicine. 97(7). e9932–e9932.
13.
Kanao, Hiroyuki, Yoichi Aoki, Terumi Tanigawa, et al.. (2018). Laparoscopic Anterior Pelvic Exenteration with Super Radical Parametrectomy for a Recurrent Low-Grade Endometrial Sarcoma That is Resistant to Hormone Therapy and Chemotherapy. Journal of Minimally Invasive Gynecology. 26(1). 34–35.
14.
Kanao, Hiroyuki, Yoichi Aoki, Terumi Tanigawa, et al.. (2018). En Bloc Resection of an Aggressive Angiomyxoma by a Novel Combination Laparoscopic and Open Perineal Approach. Journal of Minimally Invasive Gynecology. 26(4). 598–599.
15.
Nomura, Hidetaka, Maki Matoda, Sanshiro Okamoto, et al.. (2015). Clinical Characteristics of Non-SquamousCell Carcinoma of the Vagina. International Journal of Gynecological Cancer. 25(2). 320–324.
16.
Tanigawa, Terumi, Maki Matoda, Akiko Yamamoto, et al.. (2015). Clinical usefulness of the oral chemotherapy agent S-1 in heavily pre-treated patients with advanced or recurrent cervical cancer. Archives of Gynecology and Obstetrics. 293(3). 633–638.
17.
Abe, Akiko, Akiko Yamamoto, Maki Matoda, et al.. (2014). Atypical endometrial hyperplasia arising in an endometrial polyp in a tamoxifen-treated breast cancer patient in whom endometrial cytology was negative for cancer^|^mdash;A case report^|^mdash;. The Journal of the Japanese Society of Clinical Cytology. 53(4). 318–322.
18.
Matoda, Maki, Terumi Tanigawa, Kohei Omatsu, et al.. (2013). Platinum-free Interval in Second-line Chemotherapy for Recurrent Cervical Cancer. International Journal of Gynecological Cancer. 23(9). 1670–1674.
19.
Takada, Toshio, Haruko Iwase, Hidetaka Nomura, et al.. (2012). Adjuvant Chemotherapy for Stage I Clear Cell Carcinoma of the Ovary. International Journal of Gynecological Cancer. 22(4). 573–578.
20.
Takeshima, Nobuhiro, Tsuyoshi Ota, Kohei Omatsu, et al.. (2010). Neoadjuvant chemotherapy followed by radical hysterectomy plus postoperative chemotherapy but no radiotherapy for Stage IB2-IIB cervical cancer—Irinotecan and platinum chemotherapy. Gynecologic Oncology. 119(2). 212–216.
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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