Yasuhiko Maruyama

1.8k total citations
40 papers, 1.2k citations indexed

About

Yasuhiko Maruyama is a scholar working on Surgery, Genetics and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Yasuhiko Maruyama has authored 40 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Surgery, 14 papers in Genetics and 12 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Yasuhiko Maruyama's work include Inflammatory Bowel Disease (12 papers), Helicobacter pylori-related gastroenterology studies (9 papers) and Gastric Cancer Management and Outcomes (6 papers). Yasuhiko Maruyama is often cited by papers focused on Inflammatory Bowel Disease (12 papers), Helicobacter pylori-related gastroenterology studies (9 papers) and Gastric Cancer Management and Outcomes (6 papers). Yasuhiko Maruyama collaborates with scholars based in Japan and South Sudan. Yasuhiko Maruyama's co-authors include Fumitoshi Watanabe, Hiroyuki Hanai, Takayuki Iida, Ken Takeuchi, Yasushi Iwaoka, Ken Sugimoto, Hajime Arai, Masami Yamada, Kentaro Ikeya and Ken Haruma and has published in prestigious journals such as Gastroenterology, The American Journal of Gastroenterology and Gastrointestinal Endoscopy.

In The Last Decade

Yasuhiko Maruyama

35 papers receiving 1.2k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Yasuhiko Maruyama Japan 15 515 405 343 214 171 40 1.2k
Fumitoshi Watanabe Japan 15 840 1.6× 359 0.9× 545 1.6× 214 1.0× 178 1.0× 36 1.5k
Kazunari Kanke Japan 8 298 0.6× 193 0.5× 148 0.4× 213 1.0× 113 0.7× 21 801
Yasushi Iwaoka Japan 9 555 1.1× 142 0.4× 310 0.9× 212 1.0× 58 0.3× 18 1.0k
Ryohei Hayashi Japan 17 206 0.4× 293 0.7× 135 0.4× 15 0.1× 94 0.5× 54 891
Priyadarshini Loganathan United States 9 524 1.0× 270 0.7× 397 1.2× 12 0.1× 130 0.8× 40 1.1k
Duangporn Thong‐Ngam Thailand 16 60 0.1× 295 0.7× 158 0.5× 77 0.4× 96 0.6× 37 1.0k
Kim Vaiphei India 19 195 0.4× 259 0.6× 230 0.7× 9 0.0× 147 0.9× 94 1.2k
Lugen Zuo China 22 581 1.1× 374 0.9× 358 1.0× 8 0.0× 71 0.4× 93 1.4k
J.M. Reimund France 15 451 0.9× 237 0.6× 285 0.8× 7 0.0× 37 0.2× 29 1.0k
Elisabetta Cavalcanti Italy 20 146 0.3× 110 0.3× 192 0.6× 19 0.1× 42 0.2× 39 1.0k

Countries citing papers authored by Yasuhiko Maruyama

Since Specialization
Citations

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

Fields of papers citing papers by Yasuhiko Maruyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Yasuhiko Maruyama

This figure shows the co-authorship network connecting the top 25 collaborators of Yasuhiko Maruyama. A scholar is included among the top collaborators of Yasuhiko Maruyama 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 Yasuhiko Maruyama. Yasuhiko Maruyama 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.
Yamazaki, Kenji, Yasuhiko Maruyama, Ryoji Kushima, et al.. (2025). Revealing autoimmune gastritis: Polypoid nodule scar development after endoscopic submucosal dissection for early gastric cancer. DEN Open. 5(1). e70094–e70094.
2.
Kamada, Tomoari, Yasuhiko Maruyama, Yasumasa Monobe, & Ken Haruma. (2021). Endoscopic features and clinical importance of autoimmune gastritis. Digestive Endoscopy. 34(4). 700–713. 43 indexed citations
3.
Haruma, Ken, Hiroshi Matsumoto, Yasuhiko Maruyama, et al.. (2020). Clinical and endoscopic characteristics of eosinophilic esophagitis in Japan: a case-control study. Asia Pacific Allergy. 10(2). e16–e16. 9 indexed citations
4.
Iwaizumi, Moriya, Hidetaka Yamada, Yasuhiko Maruyama, et al.. (2020). Two independent families with strongly suspected hereditary diffuse gastric cancer based on the probands’ endoscopic findings. Clinical Journal of Gastroenterology. 13(5). 754–758. 7 indexed citations
5.
Ikeya, Kentaro, Hiroyuki Hanai, Ken Sugimoto, et al.. (2015). The Ulcerative Colitis Endoscopic Index of Severity More Accurately Reflects Clinical Outcomes and Long-term Prognosis than the Mayo Endoscopic Score. Journal of Crohn s and Colitis. 10(3). 286–295. 127 indexed citations
6.
Manabe, Noriaki, Ken Haruma, Atsushi Nakajima, et al.. (2015). Characteristics of Colonic Diverticulitis and Factors Associated With Complications. Diseases of the Colon & Rectum. 58(12). 1174–1181. 37 indexed citations
7.
Hangai, Sho, et al.. (2014). Successful transarterial embolization for recurrent pseudoaneurysm of the right hepatic artery with acute cholecystitis. Clinical Journal of Gastroenterology. 7(2). 164–169. 4 indexed citations
8.
Iida, Takayuki, Kentaro Ikeya, Fumitoshi Watanabe, et al.. (2013). Looking for Endoscopic Features of Cytomegalovirus Colitis. Inflammatory Bowel Diseases. 19(6). 1156–1163. 36 indexed citations
9.
Hanai, Hiroyuki, Takayuki Iida, Ken Takeuchi, et al.. (2010). Thiopurine maintenance therapy for ulcerative colitis. Inflammatory Bowel Diseases. 16(8). 1376–1381. 18 indexed citations
10.
Watanabe, Fumitoshi, et al.. (2009). LONG‐TERM PROGNOSIS OF PATIENTS AFTER ENDOSCOPIC SPHINCTEROTOMY FOR CHOLEDOCHOLITHIASIS. Digestive Endoscopy. 21(3). 170–175. 28 indexed citations
11.
Maruyama, Yasuhiko, et al.. (2008). [Retroperitoneal fibrosis and Castleman disease in two patients with high IgG4 levels].. PubMed. 105(7). 1087–92. 5 indexed citations
12.
Hanai, Hiroyuki, Takayuki Iida, Ken Takeuchi, et al.. (2008). Intensive granulocyte and monocyte adsorption versus intravenous prednisolone in patients with severe ulcerative colitis: An unblinded randomised multi-centre controlled study. Digestive and Liver Disease. 40(6). 433–440. 36 indexed citations
13.
Hanai, Hiroyuki, Takayuki Iida, Ken Takeuchi, et al.. (2006). Curcumin Maintenance Therapy for Ulcerative Colitis: Randomized, Multicenter, Double-Blind, Placebo-Controlled Trial. Clinical Gastroenterology and Hepatology. 4(12). 1502–1506. 479 indexed citations
14.
Hanai, Hiroyuki, Fumitoshi Watanabe, Masami Yamada, et al.. (2004). Correlation of Serum Soluble TNF-alpha Receptors I and II Levels with Disease Activity in Patients with Ulcerative Colitis. The American Journal of Gastroenterology. 99(8). 1532–1538. 57 indexed citations
15.
Hanai, Hiroyuki, Ken Takeuchi, Takayuki Iida, et al.. (2003). Evaluations of clinical efficacy and steroid sparing effect of granulocyte and monocyte adsorptive apheresis in patients with corticosteroid dependent ulcerative colitis. Gastroenterology. 124(4). A518–A518. 1 indexed citations
16.
Watanabe, Fumitoshi, et al.. (2000). Schwannoma of the sigmoid colon. Gastrointestinal Endoscopy. 52(4). 528–528. 6 indexed citations
17.
Kodaira, Makoto, Hiroyuki Hanai, Masayoshi Kajimura, et al.. (1999). Further Evidence That Exacerbation of Ulcerative Colitis Causes The Onset of Immune Thrombocytopenia: A Clinical Case. The American Journal of Gastroenterology. 94(5). 1408–1410. 15 indexed citations
18.
Maruyama, Yasuhiko, et al.. (1997). A Case of Phlebosclerotic Ischemic Colitis: A Distinct Entity. Endoscopy. 29(4). 334–334. 12 indexed citations
19.
Okadome, T, et al.. (1990). [Clinical characteristics of anti-phospholipid antibodies].. PubMed. 31(5). 633–8. 1 indexed citations
20.
Maruyama, Yasuhiko, Hideaki Matsuda, Reiko Matsuda, et al.. (1985). Study on Psidium guajava L. (I) : Anti-diabetic Effect and Effective Components of the Leaf of Psidium guajava L. (Part 1). 39(4). 261–269. 13 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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