Masatoshi Oya

2.9k total citations
84 papers, 2.2k citations indexed

About

Masatoshi Oya is a scholar working on Oncology, Surgery and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Masatoshi Oya has authored 84 papers receiving a total of 2.2k indexed citations (citations by other indexed papers that have themselves been cited), including 58 papers in Oncology, 52 papers in Surgery and 20 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Masatoshi Oya's work include Colorectal Cancer Surgical Treatments (39 papers), Colorectal and Anal Carcinomas (24 papers) and Colorectal Cancer Treatments and Studies (23 papers). Masatoshi Oya is often cited by papers focused on Colorectal Cancer Surgical Treatments (39 papers), Colorectal and Anal Carcinomas (24 papers) and Colorectal Cancer Treatments and Studies (23 papers). Masatoshi Oya collaborates with scholars based in Japan, United States and Switzerland. Masatoshi Oya's co-authors include Masashi Ueno, Toshiharu Yamaguchi, Yoshiya Fujimoto, Tetsuichiro Muto, Hiroya Kuroyanagi, Takashi Akiyoshi, Takashi Okuyama, Tsuyoshi Konishi, Hiroshi Ishikawa and Meiki Fukuda and has published in prestigious journals such as Journal of Clinical Oncology, SHILAP Revista de lepidopterología and Annals of Oncology.

In The Last Decade

Masatoshi Oya

81 papers receiving 2.2k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Masatoshi Oya Japan 24 1.8k 1.2k 649 308 275 84 2.2k
Aristotelis Perrakis Germany 20 1.2k 0.7× 1.0k 0.9× 795 1.2× 94 0.3× 107 0.4× 82 1.8k
Elena Manilich United States 17 881 0.5× 819 0.7× 254 0.4× 431 1.4× 405 1.5× 30 1.7k
Mesut Şeker Türkiye 17 615 0.3× 410 0.3× 488 0.8× 152 0.5× 147 0.5× 98 1.3k
Yosuke Fukunaga Japan 32 2.1k 1.2× 1.6k 1.4× 1.2k 1.8× 180 0.6× 107 0.4× 177 3.0k
Atsushi Nanashima Japan 21 748 0.4× 966 0.8× 602 0.9× 119 0.4× 197 0.7× 158 1.6k
Teruo Kakegawa Japan 29 994 0.6× 2.3k 1.9× 2.0k 3.0× 167 0.5× 193 0.7× 168 3.2k
Lemuel Herrera United States 23 1.1k 0.6× 874 0.7× 577 0.9× 409 1.3× 98 0.4× 66 1.8k
Jens Stieler Germany 22 1.4k 0.8× 526 0.4× 523 0.8× 101 0.3× 386 1.4× 51 2.1k
Dong Wook Choi South Korea 33 2.3k 1.3× 2.4k 2.0× 1.5k 2.3× 135 0.4× 510 1.9× 131 3.1k
Kenneth Cardona United States 27 1.5k 0.9× 1.2k 1.0× 1.1k 1.6× 107 0.3× 722 2.6× 143 3.0k

Countries citing papers authored by Masatoshi Oya

Since Specialization
Citations

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

Fields of papers citing papers by Masatoshi Oya

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Masatoshi Oya

This figure shows the co-authorship network connecting the top 25 collaborators of Masatoshi Oya. A scholar is included among the top collaborators of Masatoshi Oya 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 Masatoshi Oya. Masatoshi Oya 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
1.
Okuyama, Takashi, et al.. (2021). CD133 Expression Predicts Relapse in Patients With Locally Advanced Rectal Cancer Treated With Neoadjuvant Chemotherapy. In Vivo. 35(1). 437–445. 4 indexed citations
2.
3.
Kosugi, Chihiro, Keiji Koda, Keiichiro Ishibashi, et al.. (2018). Safety of mFOLFOX6/XELOX as adjuvant chemotherapy after curative resection of stage III colon cancer: phase II clinical study (The FACOS study). International Journal of Colorectal Disease. 33(6). 809–817. 9 indexed citations
4.
Yamagata, Yukinori, Kazuyuki Saito, Ryuji Yoshioka, et al.. (2017). Obstruction in the third portion of the duodenum due to a diospyrobezoar: a case report. BMC Surgery. 17(1). 117–117. 11 indexed citations
5.
Sameshima, Shinichi, et al.. (2016). Ulcerative colitis associated with nephrotic syndrome after treatment with mesalazine developed into rectal carcinoma: a case study. World Journal of Surgical Oncology. 14(1). 192–192. 4 indexed citations
6.
Sameshima, Shinichi, Takashi Okuyama, Kazuyuki Saito, et al.. (2015). Surgical resections of ulcerative colitis associated with dysplasia or carcinoma. World Journal of Surgical Oncology. 13(1). 70–70. 5 indexed citations
7.
Suenaga, Mitsukuni, Yoshiya Fujimoto, Satoshi Matsusaka, et al.. (2015). Perioperative FOLFOX4 plus bevacizumab for initially unresectable advanced colorectal cancer (NAVIGATE-CRC-01). OncoTargets and Therapy. 8. 1111–1111. 9 indexed citations
8.
Mizuno, Rei, Takashi Akiyoshi, Hiroya Kuroyanagi, et al.. (2011). Intra-abdominal desmoid tumor mimicking locoregional recurrence after colectomy in a patient with sporadic colon cancer: Report of a case. Surgery Today. 41(5). 730–732. 17 indexed citations
9.
Yamamoto, Hirofumi, Mitsugu Sekimoto, Masatoshi Oya, et al.. (2011). OSNA-Based Novel Molecular Testing for Lymph Node Metastases in Colorectal Cancer Patients: Results from a Multicenter Clinical Performance Study in Japan. Annals of Surgical Oncology. 18(7). 1891–1898. 61 indexed citations
10.
Akiyoshi, Takashi, Hiroya Kuroyanagi, Yoshiya Fujimoto, et al.. (2010). Short-Term Outcomes of Laparoscopic Colectomy for Transverse Colon Cancer. Journal of Gastrointestinal Surgery. 14(5). 818–823. 53 indexed citations
11.
Akiyoshi, Takashi, Masatoshi Oya, Yoshiya Fujimoto, et al.. (2010). Complete resection after imatinib treatment of a gastrointestinal stromal tumor of the ileum with peritoneal metastases: Report of a case. Surgery Today. 40(3). 272–276. 7 indexed citations
12.
Akiyoshi, Takashi, Hiroya Kuroyanagi, Masatoshi Oya, et al.. (2008). Safety of Laparoscopic Total Mesorectal Excision for Low Rectal Cancer with Preoperative Chemoradiation Therapy. Journal of Gastrointestinal Surgery. 13(3). 521–525. 41 indexed citations
13.
Fujimoto, Yoshiya, Masatoshi Oya, Hiroya Kuroyanagi, et al.. (2008). Lymph-node metastases in rectal carcinoids. Langenbeck s Archives of Surgery. 395(2). 139–142. 29 indexed citations
14.
Oya, Masatoshi, Masashi Ueno, Toshiharu Yamaguchi, et al.. (2006). Anal Canal Carcinoma with Pagetoid Spread: Report of a Case. Surgery Today. 36(7). 666–669. 19 indexed citations
15.
Kobayashi, Hirotoshi, Hidetaka Mochizuki, Kenichi Sugihara, et al.. (2006). Characteristics of recurrence and surveillance tools after curative resection for colorectal cancer: A multicenter study. Surgery. 141(1). 67–75. 225 indexed citations
16.
Yanagisawa, Akio, Toshiaki Watanabe, Hirokazu Nagawa, et al.. (2005). Increase in the frequency of K‐ras codon 12 point mutation in colorectal carcinoma in elderly males in Japan: The 1990s compared with the 1960s. Cancer Science. 96(4). 218–220. 7 indexed citations
17.
Sato, Takahiro, Shigekazu Ohyama, Mitsukuni Suenaga, et al.. (2003). Klippel-Trenaunay-Weber syndrome and duodenal hemorrhage. Gastrointestinal Endoscopy. 58(5). 756–757. 3 indexed citations
18.
Ueno, Masashi, et al.. (2003). Multiple primary cancer: an experience at the Cancer Institute Hospital with special reference to colorectal cancer. International Journal of Clinical Oncology. 8(3). 162–167. 121 indexed citations
19.
Okuyama, Takashi, Masatoshi Oya, & Hiroshi Ishikawa. (2003). Budding as a useful prognostic marker in pT3 well‐ or moderately‐differentiated rectal adenocarcinoma. Journal of Surgical Oncology. 83(1). 42–47. 79 indexed citations
20.
Oya, Masatoshi, et al.. (2002). Vasoactive intestinal peptide and its relationship to tumor stage in colorectal carcinoma: an immunohistochemical study. Journal of Gastroenterology. 37(5). 336–344. 6 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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