Fumikazu Koyama

79 papers and 850 indexed citations i.

About

Fumikazu Koyama is a scholar working on Surgery, Oncology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Fumikazu Koyama has authored 79 papers receiving a total of 850 indexed citations (citations by other indexed papers that have themselves been cited), including 41 papers in Surgery, 33 papers in Oncology and 23 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Fumikazu Koyama’s work include Colorectal Cancer Surgical Treatments (17 papers), Gastric Cancer Management and Outcomes (17 papers) and Colorectal and Anal Carcinomas (11 papers). Fumikazu Koyama is often cited by papers focused on Colorectal Cancer Surgical Treatments (17 papers), Gastric Cancer Management and Outcomes (17 papers) and Colorectal and Anal Carcinomas (11 papers). Fumikazu Koyama collaborates with scholars based in Japan and United States. Fumikazu Koyama's co-authors include Yoshiyuki Nakajima, Hisao Fujii, Takeshi Ueda, Shinji Nakamura, Takashi Inoue, Shinsaku Obara, Tadashi Nakagawa, Masayuki Sho, H Sawada and Michiyoshi Hisanaga and has published in prestigious journals such as PLoS ONE, Clinical Cancer Research and Biochemical and Biophysical Research Communications.

In The Last Decade

Co-authorship network of co-authors of Fumikazu Koyama i

Fields of papers citing papers by Fumikazu Koyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Fumikazu Koyama

Since Specialization
Citations

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

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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