Shigeru Koyama

700 total citations
54 papers, 547 citations indexed

About

Shigeru Koyama is a scholar working on Pulmonary and Respiratory Medicine, Surgery and Oncology. According to data from OpenAlex, Shigeru Koyama has authored 54 papers receiving a total of 547 indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Pulmonary and Respiratory Medicine, 15 papers in Surgery and 12 papers in Oncology. Recurrent topics in Shigeru Koyama's work include Lung Cancer Treatments and Mutations (8 papers), Gastric Cancer Management and Outcomes (5 papers) and Gastrointestinal disorders and treatments (4 papers). Shigeru Koyama is often cited by papers focused on Lung Cancer Treatments and Mutations (8 papers), Gastric Cancer Management and Outcomes (5 papers) and Gastrointestinal disorders and treatments (4 papers). Shigeru Koyama collaborates with scholars based in Japan. Shigeru Koyama's co-authors include Teruki Kobayashi, Tsuneaki Homma, Shinichi Nakagawa, Tomonobu Koizumi, Keishi Kubo, Toshio Kobayashi, Morie Sekiguchi, Masashi Imai, Tsutomu Hachiya and K. Yoshitomi and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of Applied Physiology and European Respiratory Journal.

In The Last Decade

Shigeru Koyama

46 papers receiving 529 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Shigeru Koyama Japan 13 219 157 96 95 88 54 547
Hirofumi Kishimoto Japan 12 109 0.5× 107 0.7× 125 1.3× 120 1.3× 97 1.1× 42 565
Ilana Avinoach Israel 16 74 0.3× 157 1.0× 105 1.1× 71 0.7× 130 1.5× 34 658
Kiyonori Furukawa Japan 16 127 0.6× 240 1.5× 65 0.7× 312 3.3× 91 1.0× 61 762
Lawrence Yuen Australia 13 170 0.8× 183 1.2× 91 0.9× 337 3.5× 97 1.1× 51 732
Ketan Sheth United States 10 79 0.4× 144 0.9× 113 1.2× 174 1.8× 88 1.0× 21 503
M. Kruschewski Germany 15 171 0.8× 264 1.7× 94 1.0× 340 3.6× 52 0.6× 42 806
Atsuhiro Morita Japan 10 89 0.4× 114 0.7× 76 0.8× 126 1.3× 265 3.0× 13 600
Karen E. Todd United States 12 146 0.7× 304 1.9× 178 1.9× 345 3.6× 196 2.2× 15 706
Fumihiko Kaneko Japan 14 154 0.7× 77 0.5× 33 0.3× 135 1.4× 102 1.2× 30 629
W Kisielewski Poland 10 45 0.2× 129 0.8× 55 0.6× 107 1.1× 59 0.7× 23 511

Countries citing papers authored by Shigeru Koyama

Since Specialization
Citations

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

Fields of papers citing papers by Shigeru Koyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Shigeru Koyama

This figure shows the co-authorship network connecting the top 25 collaborators of Shigeru Koyama. A scholar is included among the top collaborators of Shigeru Koyama 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 Shigeru Koyama. Shigeru Koyama 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.
Suzuki, Shinji, et al.. (2024). Analysis of lens cloudiness during endoscopic submucosal dissection procedures: Effects of a novel lens cleaner. SHILAP Revista de lepidopterología. 5(1). e416–e416. 1 indexed citations
2.
3.
Tateishi, Kazunari, Masamichi Komatsu, Shigeru Koyama, et al.. (2022). Predictive value of post‐treatment C‐reactive protein‐to‐albumin ratio in locally advanced non–small cell lung cancer patients receiving durvalumab after chemoradiotherapy. Thoracic Cancer. 13(14). 2031–2040. 11 indexed citations
4.
5.
Fujii, Takashi, et al.. (2020). A CASE OF ESOPHAGEAL CARCINOMA WITH GIANT INTRAMURAL METASTASIS TO THE STOMACH. Progress of Digestive Endoscopy. 96(1). 82–84.
6.
7.
Akiyama, Tomoyuki, Kazuro Chiba, Keiko Akimoto, et al.. (2012). Successful endoscopic removal of a press-through package in the terminal ileum causing obstructive ileus. Gastrointestinal Endoscopy. 75(3). 671–672. 1 indexed citations
8.
Koizumi, Tomonobu, Masanori Yasuo, Kenji Tsushima, et al.. (2012). A phase II trial of erlotinib in patients with EGFR wild-type advanced non-small-cell lung cancer. Cancer Chemotherapy and Pharmacology. 69(5). 1241–1246. 36 indexed citations
9.
Sekino, Yusuke, Masahiko Inamori, Kaori Suzuki, et al.. (2011). Solitary Peutz-Jeghers type hamartomatous polyps in the duodenum are not always associated with a low risk of cancer: two case reports. Journal of Medical Case Reports. 5(1). 240–240. 12 indexed citations
10.
Koyama, Shigeru, et al.. (2008). Status of Needlestick Injuries and the Basic Strategy for Prevention Programs in Our Hospital. 23(4). 285–289. 2 indexed citations
11.
Fujisawa, Nobutaka, Yusuke Sekino, Kaori Suzuki, et al.. (2008). Gastrointestinal: Colonic spirochetosis. Journal of Gastroenterology and Hepatology. 23(7pt1). 1160–1160. 4 indexed citations
12.
Kaneki, Toshimichi, Shigeru Koyama, Shuichi Wada, et al.. (2003). Hemorrhagic rectal ulcer caused by a deformity of the coccyx complicated by normal delivery. Journal of Gastroenterology. 38(7). 681–683. 1 indexed citations
13.
Yoshikawa, Sumiko, Hikaru Kobayashi, Shintaro Kanda, et al.. (2002). An Asian Variant of Intravascular Lymphoma Diagnosed Through Splenectomy.. Internal Medicine. 41(12). 1215–1216. 4 indexed citations
14.
Koizumi, Tomonobu, Toshiyuki Tsunoda, Keisaku Fujimoto, et al.. (2001). Phase I trial of weekly docetaxel combined with cisplatin in patients with non-small cell lung cancer. Lung Cancer. 34(1). 125–131. 9 indexed citations
15.
Sasai, H, et al.. (2000). Echocardiographic diagnosis of dirofilariasis in a ferret. Journal of Small Animal Practice. 41(4). 172–174. 18 indexed citations
16.
Kaneki, Toshimichi, Masayuki Hanaoka, Toshihide Hayano, et al.. (1999). A 21‐aminosteroid, U‐74006F, attenuates endotoxin‐induced lung injury in awake sheep. Respirology. 4(2). 167–172. 12 indexed citations
17.
Tsushima, Kenji, Shigeru Koyama, Kazuyoshi Okada, et al.. (1999). Massive Pulmonary Hemorrhage due to Cytomegalovirus Infection in a Japanese Patient with Alpha-1-Antitrypsin-Deficient Emphysema. Respiration. 66(4). 373–376. 4 indexed citations
18.
Tsushima, Kenji, et al.. (1999). Pulmonary Alveolar Proteinosis in a Patient with Chronic Myelogenous Leukemia. Respiration. 66(2). 173–175. 3 indexed citations
19.
Koizumi, Tomonobu, et al.. (1993). Granulocyte Colony-stimulating Factor Does Not Exacerbate Endotoxin-induced Lung Injury in Sheep. American Review of Respiratory Disease. 148(1). 132–137. 39 indexed citations
20.
Koyama, Shigeru, et al.. (1992). Recombinant-human Superoxide Dismutase Attenuates Endotoxin-induced Lung Injury in Awake Sheep. American Review of Respiratory Disease. 145(6). 1404–1409. 29 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Hirofumi Kishimoto Breakdown of academic impact, for papers by Ilana Avinoach Breakdown of academic impact, for papers by Kiyonori Furukawa Breakdown of academic impact, for papers by Lawrence Yuen Breakdown of academic impact, for papers by Ketan Sheth Breakdown of academic impact, for papers by M. Kruschewski Breakdown of academic impact, for papers by Atsuhiro Morita Breakdown of academic impact, for papers by Karen E. Todd Breakdown of academic impact, for papers by Fumihiko Kaneko Breakdown of academic impact, for papers by W Kisielewski
Rankless by CCL
2026