Shomei Ryozawa

5.0k total citations
187 papers, 2.8k citations indexed

About

Shomei Ryozawa is a scholar working on Pulmonary and Respiratory Medicine, Surgery and Oncology. According to data from OpenAlex, Shomei Ryozawa has authored 187 papers receiving a total of 2.8k indexed citations (citations by other indexed papers that have themselves been cited), including 136 papers in Pulmonary and Respiratory Medicine, 132 papers in Surgery and 76 papers in Oncology. Recurrent topics in Shomei Ryozawa's work include Gallbladder and Bile Duct Disorders (89 papers), Pancreatic and Hepatic Oncology Research (65 papers) and Esophageal and GI Pathology (60 papers). Shomei Ryozawa is often cited by papers focused on Gallbladder and Bile Duct Disorders (89 papers), Pancreatic and Hepatic Oncology Research (65 papers) and Esophageal and GI Pathology (60 papers). Shomei Ryozawa collaborates with scholars based in Japan, United States and China. Shomei Ryozawa's co-authors include Takao Itoi, Isao Sakaida, Yuki Tanisaka, Ichiro Yasuda, Akashi Fujita, Masafumi Mizuide, Hiroyuki Isayama, Kiwamu Okita, Kumiko Taba and Tomoaki Tashima and has published in prestigious journals such as Journal of Clinical Oncology, SHILAP Revista de lepidopterología and PLoS ONE.

In The Last Decade

Shomei Ryozawa

174 papers receiving 2.8k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Shomei Ryozawa Japan 29 2.0k 1.9k 1.4k 384 328 187 2.8k
Takuo Hara Japan 16 813 0.4× 1.7k 0.9× 1.0k 0.7× 466 1.2× 763 2.3× 57 2.5k
Atsushi Sugioka Japan 26 1.1k 0.6× 1.0k 0.5× 581 0.4× 150 0.4× 444 1.4× 107 2.2k
Daniel Reim Germany 20 643 0.3× 877 0.5× 448 0.3× 234 0.6× 377 1.1× 73 1.7k
Paul Yeaton United States 30 2.1k 1.1× 1.7k 0.9× 1.4k 1.0× 214 0.6× 114 0.3× 105 2.6k
Naoki Muguruma Japan 23 635 0.3× 687 0.4× 544 0.4× 469 1.2× 269 0.8× 161 1.9k
Uwe A. Wittel Germany 29 924 0.5× 644 0.3× 1.4k 1.0× 649 1.7× 55 0.2× 100 2.4k
Alberto Marchet Italy 28 1.4k 0.7× 1.8k 0.9× 562 0.4× 214 0.6× 757 2.3× 75 2.7k
Sook Whan Sung South Korea 31 517 0.3× 1.5k 0.8× 510 0.4× 511 1.3× 57 0.2× 87 2.4k
Shiro Kikuchi Japan 25 779 0.4× 1.1k 0.6× 324 0.2× 263 0.7× 593 1.8× 92 1.7k
Yasuo Hirono Japan 23 525 0.3× 410 0.2× 505 0.4× 616 1.6× 136 0.4× 112 1.7k

Countries citing papers authored by Shomei Ryozawa

Since Specialization
Citations

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

Fields of papers citing papers by Shomei Ryozawa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Shomei Ryozawa

This figure shows the co-authorship network connecting the top 25 collaborators of Shomei Ryozawa. A scholar is included among the top collaborators of Shomei Ryozawa 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 Shomei Ryozawa. Shomei Ryozawa 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.
Mukai, Shuntaro, Yoshifumi Takeyama, Takao Itoi, et al.. (2025). Clinical Practice Guidelines for post‐ERCP pancreatitis 2023. Digestive Endoscopy. 37(6). 573–587. 5 indexed citations
2.
Tanisaka, Yuki, Shomei Ryozawa, Takao Itoi, et al.. (2025). Mixed-reality-based education with holographic support before and during ERCP-related procedures. Endoscopy. 57(S 01). E915–E916.
3.
Fujita, Akashi, Masafumi Mizuide, Shomei Ryozawa, et al.. (2025). Novel use of superb microvascular imaging in endoscopic ultrasound-guided tissue acquisition for pancreatic mass. Endoscopy. 57(S 01). E185–E187. 1 indexed citations
4.
5.
Tanisaka, Yuki, et al.. (2024). Peroral cholangioscopy-guided lithotripsy using a novel thin cholangioscope under balloon enteroscopy for Roux-en-Y anastomosis. Endoscopy. 56(S 01). E360–E361. 4 indexed citations
6.
Imamura, Yoshinori, et al.. (2024). Navigating antibiotic therapy in acute cholangitis: Best practices and new insights. Journal of Hepato-Biliary-Pancreatic Sciences. 32(1). 44–57. 1 indexed citations
7.
Tanisaka, Yuki, et al.. (2024). Successful cholangioscopy-guided cannulation using a novel slim cholangioscope in a patient with Roux-en-Y gastrectomy. Endoscopy. 56(S 01). E158–E159. 1 indexed citations
8.
9.
Tanisaka, Yuki, Masafumi Mizuide, & Shomei Ryozawa. (2024). Successful cholangioscopy‐guided cannulation using a novel slim cholangioscope. Journal of Hepato-Biliary-Pancreatic Sciences. 31(5). e22–e24.
10.
Tanisaka, Yuki, et al.. (2024). Successful endoscopic sphincterotomy using a novel rotatable sphincterotome in a patient with Roux-en-Y gastrectomy. Endoscopy. 56(S 01). E1038–E1039. 1 indexed citations
11.
Hirasaki, Masataka, Yosuke Horita, Hisayo Fukushima, et al.. (2023). PTEN-induced kinase 1 gene single-nucleotide variants as biomarkers in adjuvant chemotherapy for colorectal cancer: a retrospective study. BMC Gastroenterology. 23(1). 339–339. 3 indexed citations
12.
Kawasaki, Tomonori, et al.. (2023). How to differentiate between invasive lobular carcinoma metastasis and type 4 advanced gastric cancer: The importance of immunohistochemistry. SHILAP Revista de lepidopterología. 11(6). e7529–e7529. 1 indexed citations
13.
Mandai, Koichiro, Takayoshi Tsuchiya, Hiroshi Kawakami, et al.. (2021). Fully covered metal stents vs plastic stents for preoperative biliary drainage in patients with resectable pancreatic cancer without neoadjuvant chemotherapy: A multicenter, prospective, randomized controlled trial. Journal of Hepato-Biliary-Pancreatic Sciences. 29(11). 1185–1194. 10 indexed citations
14.
Kobayashi, Masanori, Tomoaki Tashima, Koji Nagata, et al.. (2020). Colorectal and gastric metastases from lobular breast cancer that resembled superficial neoplastic lesions. Clinical Journal of Gastroenterology. 14(1). 103–108. 8 indexed citations
15.
Tanisaka, Yuki, Shomei Ryozawa, Kouichi Nonaka, Shinichi Ban, & Akashi Fujita. (2020). Peroral cholangioscopy–guided probe-based confocal laser endomicroscopy for preoperative diagnosis of pancreatic cancer in a patient with surgically altered anatomy. VideoGIE. 5(3). 110–113. 2 indexed citations
16.
Tashima, Tomoaki, Kouichi Nonaka, & Shomei Ryozawa. (2019). Successful endoscopic mucosal resection with over‐the‐scope clip for gastric cancer of fundic gland type apparently inappropriate for endoscopic submucosal dissection. Digestive Endoscopy. 31(5). e92–e93. 1 indexed citations
17.
Kobayashi, Masanori, Shomei Ryozawa, Hirotoshi Iwano, et al.. (2019). The usefulness of wire-guided endoscopic snare papillectomy for tumors of the major duodenal papilla. PLoS ONE. 14(1). e0211019–e0211019. 7 indexed citations
18.
Tanisaka, Yuki, Shomei Ryozawa, Masanori Kobayashi, & Akashi Fujita. (2018). Sa1298 ASSESMENT OF SHORT SINGLE-BALLOON ENTEROSCOPE (SHORT-SBE) FOR THERAPEUTIC ERCP IN PATIENTS WITH SURGICALLY ALTERED ANATOMY. Gastrointestinal Endoscopy. 87(6). AB202–AB202. 1 indexed citations
19.
Kobayashi, Masanori, Shomei Ryozawa, & Koji Nagata. (2018). Hepatobiliary and Pancreatic: A case of pure squamous cell carcinoma of the gallbladder. Journal of Gastroenterology and Hepatology. 33(5). 976–976. 1 indexed citations
20.
Iwano, Hirotoshi, et al.. (2008). Management of unresectable hilar biliary obstruction : Plastic stents versus metallic stents and unilateral versus bilateral biliary drainage. 55(1). 9–14. 1 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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