Ryo Nakashima

583 total citations
21 papers, 409 citations indexed

About

Ryo Nakashima is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Gastroenterology. According to data from OpenAlex, Ryo Nakashima has authored 21 papers receiving a total of 409 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Surgery, 13 papers in Pulmonary and Respiratory Medicine and 7 papers in Gastroenterology. Recurrent topics in Ryo Nakashima's work include Gastric Cancer Management and Outcomes (7 papers), Gastroesophageal reflux and treatments (6 papers) and Helicobacter pylori-related gastroenterology studies (5 papers). Ryo Nakashima is often cited by papers focused on Gastric Cancer Management and Outcomes (7 papers), Gastroesophageal reflux and treatments (6 papers) and Helicobacter pylori-related gastroenterology studies (5 papers). Ryo Nakashima collaborates with scholars based in Japan, United States and United Kingdom. Ryo Nakashima's co-authors include Yuichi Yamashita, Hironari Shiwaku, Richiko Beppu, Haruhiro Inoue, Naoyoshi Nagata, Naomi Uemura, Takuro Shimbo, Junichi Akiyama, Yasushi Yamauchi and Seiichiro Hoshino and has published in prestigious journals such as Scientific Reports, Endocrinology and Emerging infectious diseases.

In The Last Decade

Ryo Nakashima

19 papers receiving 406 citations

Peers

Ryo Nakashima

SURGE

GASTR

PRM

ONCOL

Pietro Fiamingo Italy

S. Bolognini Italy

Oya Uygur‐Bayramiçli Türkiye

Jaswinder Singh Sodhi India

Antonio Marseglia Italy

Thomas Lambin France

Simon S. B. Chew Australia

Anne Breton France

Veerle Moons Belgium

Rishi Bolia India

Pietro Fiamingo Italy

Ryo Nakashima

319 ×1.1

SURGE

68 ×0.4

GASTR

46 ×0.4

PRM

33 ×0.4

60 ×1.2

ONCOL

Citations per year, relative to Ryo Nakashima Ryo Nakashima (= 1×) peers Pietro Fiamingo

Countries citing papers authored by Ryo Nakashima

Since Specialization

Citations

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

Fields of papers citing papers by Ryo Nakashima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryo Nakashima

This figure shows the co-authorship network connecting the top 25 collaborators of Ryo Nakashima. A scholar is included among the top collaborators of Ryo Nakashima 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 Ryo Nakashima. Ryo Nakashima is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Sako, Akahito, Tomoyuki Yada, Keiichi Fujiya, et al.. (2024). Clinical epidemiology of the endoscopic, laparoscopic, and surgical resection of malignant gastric tumors in Japan, 2014–2021: a retrospective study using open data from a national claims database. Gastric Cancer. 28(1). 1–11. 1 indexed citations

Kajiwara, Masatoshi, et al.. (2023). A Case of Intracholecystic Papillary Neoplasm with Early Recurrence of Liver Metastases after Curative Resection. Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association). 84(3). 448–453.

Ishida, Yusuke, Yoshihiro Hamada, Yukihisa Takayama, et al.. (2023). High predictive ability of apparent diffusion coefficient value for wall-invasion pattern of advanced gallbladder carcinoma. Abdominal Radiology. 48(3). 902–912.

Ishida, Yusuke, Ryo Nakashima, Keisuke Sato, et al.. (2023). Preoperatively diagnosed intraductal oncocytic papillary neoplasm of the pancreas with prominent invasion: a case report. Clinical Journal of Gastroenterology. 16(5). 772–778. 1 indexed citations

Kajiwara, Masatoshi, Ryo Nakashima, Fumihiro Yoshimura, & Suguru Hasegawa. (2022). Impact of AirSeal® insufflation system on respiratory and circulatory dynamics during laparoscopic abdominal surgery. Updates in Surgery. 74(6). 2003–2009. 2 indexed citations

Yoshida, Yoichiro, Teppei Yamada, Hideki Shimaoka, et al.. (2021). Oncological evaluation in the perioperative period using cfDNA with BRAF V600E mutation in patients with colorectal cancer. Scientific Reports. 11(1). 13263–13263. 4 indexed citations

Yamashita, Kanefumi, Hironari Shiwaku, Hideki Shimaoka, et al.. (2016). Efficacy and safety of endoscopic submucosal dissection under general anesthesia. World Journal of Gastrointestinal Endoscopy. 8(13). 466–466. 25 indexed citations

Shiwaku, Hironari, Haruhiro Inoue, Kanefumi Yamashita, et al.. (2016). Peroral endoscopic myotomy for esophageal achalasia: outcomes of the first over 100 patients with short-term follow-up. Surgical Endoscopy. 30(11). 4817–4826. 53 indexed citations

Yamashita, Kanefumi, Hironari Shiwaku, Ryuichiro Hirose, et al.. (2016). Long‐term outcome of peroral endoscopic myotomy for achalasia treatment in a 9‐year‐old female patient. Asian Journal of Endoscopic Surgery. 9(4). 332–335. 1 indexed citations

10.

Kato, Daisuke, Takamitsu Sasaki, Kanefumi Yamashita, et al.. (2015). Drain selection reduces pancreatic fistulae risk: a propensity-score matched study.. PubMed. 62(138). 485–92. 3 indexed citations

11.

Shinya, Satoshi, Takamitsu Sasaki, Yuichi Yamashita, et al.. (2014). Procalcitonin as a useful biomarker for determining the need to perform emergency biliary drainage in cases of acute cholangitis. Journal of Hepato-Biliary-Pancreatic Sciences. 21(10). 777–785. 26 indexed citations

12.

Sasaki, Takamitsu, Daisuke Kato, Satoshi Shinya, et al.. (2014). Successful treatment of gallbladder dyskinesia by laparascopic cholecystectomy: Report of a case. Asian Journal of Endoscopic Surgery. 7(4). 308–310. 1 indexed citations

13.

Hamada, Yohei, Naoyoshi Nagata, Takuro Shimbo, et al.. (2013). Assessment of Antigenemia Assay for the Diagnosis of Cytomegalovirus Gastrointestinal Diseases in HIV-Infected Patients. AIDS Patient Care and STDs. 27(7). 387–391. 6 indexed citations

14.

Watanabe, Kazuhiro, Naoyoshi Nagata, Takuro Shimbo, et al.. (2013). Accuracy of endoscopic diagnosis of Helicobacter pyloriinfection according to level of endoscopic experience and the effect of training. BMC Gastroenterology. 13(1). 128–128. 58 indexed citations

15.

Nagata, Naoyoshi, Junichi Akiyama, Hiroyuki Marusawa, et al.. (2013). Enhanced expression of activation-induced cytidine deaminase in human gastric mucosa infected by Helicobacter pylori and its decrease following eradication. Journal of Gastroenterology. 49(3). 427–435. 19 indexed citations

16.

Nagata, Naoyoshi, Takuro Shimbo, Junichi Akiyama, et al.. (2012). Risk Factors for Intestinal Invasive Amebiasis in Japan, 2003–2009. Emerging infectious diseases. 18(5). 717–724. 45 indexed citations

17.

Shiwaku, Hironari, Haruhiro Inoue, Richiko Beppu, et al.. (2012). Successful treatment of diffuse esophageal spasm by peroral endoscopic myotomy. Gastrointestinal Endoscopy. 77(1). 149–150. 90 indexed citations

18.

Nagata, Naoyoshi, et al.. (2012). <i>Candida</i> Associated Gastric Ulcers in an Elderly Patient. Internal Medicine. 51(11). 1433–1433. 3 indexed citations

19.

Nakashima, Ryo, Naoyoshi Nagata, Kazuhiro Watanabe, et al.. (2011). Histological features of nodular gastritis and its endoscopic classification. Journal of Digestive Diseases. 12(6). 436–442. 14 indexed citations

20.

Nagata, Naoyoshi, et al.. (2011). A case of candidal infection of gastric ulcers with characteristic endoscopic findings.. PubMed. 108(8). 1393–8. 4 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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