Keiji Sugiyama

35 papers and 406 indexed citations i.

About

Keiji Sugiyama is a scholar working on Oncology, Pulmonary and Respiratory Medicine and Surgery. According to data from OpenAlex, Keiji Sugiyama has authored 35 papers receiving a total of 406 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Oncology, 18 papers in Pulmonary and Respiratory Medicine and 8 papers in Surgery. Recurrent topics in Keiji Sugiyama’s work include Gastric Cancer Management and Outcomes (12 papers), Colorectal Cancer Treatments and Studies (7 papers) and Nutrition and Health in Aging (5 papers). Keiji Sugiyama is often cited by papers focused on Gastric Cancer Management and Outcomes (12 papers), Colorectal Cancer Treatments and Studies (7 papers) and Nutrition and Health in Aging (5 papers). Keiji Sugiyama collaborates with scholars based in Japan, United States and Belgium. Keiji Sugiyama's co-authors include Shigenori Kadowaki, Kei Muro, Takashi Ura, Yukiya Narita, Seiichiro Mitani, Masashi Ando, Toshiki Masuishi, Kazunori Honda, Hiroya Taniguchi and Masahiro Tajika and has published in prestigious journals such as Journal of Clinical Oncology, Annals of Oncology and The American Journal of Surgical Pathology.

In The Last Decade

Co-authorship network of co-authors of Keiji Sugiyama i

Fields of papers citing papers by Keiji Sugiyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Keiji Sugiyama

Since Specialization
Citations

This map shows the geographic impact of Keiji Sugiyama'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 Keiji Sugiyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Keiji Sugiyama 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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2025