Keisuke Iwata

1.6k total citations
63 papers, 923 citations indexed

About

Keisuke Iwata is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, Keisuke Iwata has authored 63 papers receiving a total of 923 indexed citations (citations by other indexed papers that have themselves been cited), including 54 papers in Surgery, 40 papers in Pulmonary and Respiratory Medicine and 28 papers in Oncology. Recurrent topics in Keisuke Iwata's work include Gallbladder and Bile Duct Disorders (33 papers), Pancreatic and Hepatic Oncology Research (27 papers) and Pediatric Hepatobiliary Diseases and Treatments (25 papers). Keisuke Iwata is often cited by papers focused on Gallbladder and Bile Duct Disorders (33 papers), Pancreatic and Hepatic Oncology Research (27 papers) and Pediatric Hepatobiliary Diseases and Treatments (25 papers). Keisuke Iwata collaborates with scholars based in Japan, Ireland and United States. Keisuke Iwata's co-authors include Takuji Iwashita, Tsuyoshi Mukai, Ichiro Yasuda, Shinpei Doi, Masanori Nakashima, Hisataka Moriwaki, Masahito Shimizu, Eiichi Tomita, Shinya Uemura and Nobuhiro Ando and has published in prestigious journals such as SHILAP Revista de lepidopterología, Gut and Gastrointestinal Endoscopy.

In The Last Decade

Keisuke Iwata

53 papers receiving 906 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Keisuke Iwata Japan	18	796	632	462	99	72	63	923
Takahisa Ogawa Japan	17	848 1.1×	690 1.1×	591 1.3×	56 0.6×	36 0.5×	96	985
Shinsuke Koshita Japan	18	970 1.2×	802 1.3×	783 1.7×	115 1.2×	30 0.4×	91	1.1k
Yoshihide Kanno Japan	18	1.1k 1.3×	932 1.5×	833 1.8×	89 0.9×	25 0.3×	104	1.2k
Takamitsu Komaki Japan	11	539 0.7×	351 0.6×	588 1.3×	217 2.2×	23 0.3×	27	812
Kaori Masu Japan	15	517 0.6×	373 0.6×	317 0.7×	37 0.4×	24 0.3×	53	589
Takashi Obana Japan	22	997 1.3×	884 1.4×	715 1.5×	78 0.8×	37 0.5×	65	1.2k
Carlos G. Micames Puerto Rico	5	419 0.5×	381 0.6×	399 0.9×	119 1.2×	10 0.1×	12	723
Christos Agalianos Greece	14	354 0.4×	235 0.4×	397 0.9×	89 0.9×	46 0.6×	29	563
Lisa M. Wiersema United States	7	366 0.5×	319 0.5×	280 0.6×	111 1.1×	13 0.2×	9	563
Jyotsna Batapati Krishna Reddy United States	8	469 0.6×	319 0.5×	465 1.0×	61 0.6×	7 0.1×	10	708

Countries citing papers authored by Keisuke Iwata

Since Specialization

Citations

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

Fields of papers citing papers by Keisuke Iwata

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Keisuke Iwata

This figure shows the co-authorship network connecting the top 25 collaborators of Keisuke Iwata. A scholar is included among the top collaborators of Keisuke Iwata 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 Keisuke Iwata. Keisuke Iwata 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

Okuno, Mitsuru, Keisuke Iwata, Tsuyoshi Mukai, et al.. (2025). Efficacy of mapping biopsy using a novel sheath system for the histological diagnosis of superficial ductal spread in distal cholangiocarcinoma: A retrospective multicenter study. Journal of Hepato-Biliary-Pancreatic Sciences. 32(2). 114–123.

Iwashita, Takuji, Shinya Uemura, Kensaku Yoshida, et al.. (2025). 19-Gauge Versus 22-Gauge Franseen Needles, Comparison of the Histological Diagnostic Capability of Endoscopic Ultrasound-Guided Fine-Needle Biopsy for Autoimmune Pancreatitis: A Multicenter Retrospective Cohort Study. Diagnostics. 15(12). 1496–1496. 1 indexed citations

Hamada, Tsuyoshi, Nobuaki Michihata, Tomotaka Saito, et al.. (2025). Real-world impact of implementing lumen-apposing metal stents for pancreatic fluid collections: a nationwide Japanese study. Gut. 75(3). 521–529.

Okuno, Mitsuru, Tomohiro Kanayama, Keisuke Iwata, et al.. (2024). Possibility of Cell Block Specimens from Overnight-Stored Bile for Next-Generation Sequencing of Cholangiocarcinoma. Cells. 13(11). 925–925. 1 indexed citations

Maruta, Akinori, Takuji Iwashita, Kensaku Yoshida, et al.. (2024). One‐stage versus two‐stage endoscopic management for acute cholangitis caused by common bile duct stones: A retrospective multicenter cohort study. Journal of Hepato-Biliary-Pancreatic Sciences. 31(6). 415–424.

Iwata, Keisuke, Takuji Iwashita, Tsuyoshi Mukai, et al.. (2024). Peroral Pancreatoscopy-Guided Lithotripsy Compared with Extracorporeal Shock Wave Lithotripsy in the Management of Pancreatic Duct Stones in Chronic Pancreatitis: A Multicenter Retrospective Cohort Study. Diagnostics. 14(9). 891–891. 2 indexed citations

Nakai, Yousuke, Tsuyoshi Hamada, Hideyuki Shiomi, et al.. (2023). Time to think prime times for treatment of necrotizing pancreatitis: Pendulum conundrum. Digestive Endoscopy. 35(6). 700–710. 6 indexed citations

Okuno, Mitsuru, Keisuke Iwata, Tsuyoshi Mukai, et al.. (2023). Comparison of unilateral and bilateral intraductal plastic stent placement for unresectable malignant hilar biliary obstruction: A propensity score‐matched cohort analysis. Journal of Hepato-Biliary-Pancreatic Sciences. 31(4). 284–293. 6 indexed citations

Okuno, Mitsuru, Keisuke Iwata, Tsuyoshi Mukai, et al.. (2023). Comparison of 19-gauge conventional and Franseen needles for the diagnosis of lymphadenopathy and classification of malignant lymphoma using endoscopic ultrasound fine-needle aspiration. Clinical Endoscopy. 57(3). 364–374.

10.

Iwashita, Takuji, Tatsuya Sato, Ichiro Yasuda, et al.. (2023). Risk of recurrence with or without plastic stent after EUS-guided treatment of peripancreatic fluid collections: A systematic review and meta-analysis. SHILAP Revista de lepidopterología. 12(2). E188–E198. 3 indexed citations

11.

Iwata, Keisuke, Tsuyoshi Mukai, Yuhei Iwasa, et al.. (2023). Pancreatic Metastases from Renal Cell Carcinoma Showing Atypical Imaging Findings. Internal Medicine. 63(1). 77–81.

12.

Okuno, Mitsuru, Keisuke Iwata, Tsuyoshi Mukai, et al.. (2023). The evaluation of bilateral stenting using braided or laser-cut self-expandable metallic stent for malignant hilar biliary obstruction. Surgical Endoscopy. 37(11). 8489–8497.

13.

Maruta, Akinori, Takuji Iwashita, Kensaku Yoshida, et al.. (2022). Endoscopic Internalization by Cutting the Endoscopic Transpapillary Nasogallbladder Drainage Tube in Management of Acute Cholecystitis: A Retrospective Multicenter Cohort Study. Journal of Clinical Medicine. 11(24). 7415–7415. 1 indexed citations

14.

Maruta, Akinori, Takuji Iwashita, Keisuke Iwata, et al.. (2021). Permanent endoscopic gallbladder stenting versus removal of gallbladder drainage, long‐term outcomes after management of acute cholecystitis in high‐risk surgical patients for cholecystectomy: Multi‐center retrospective cohort study. Journal of Hepato-Biliary-Pancreatic Sciences. 28(12). 1138–1146. 17 indexed citations

15.

Tanaka, Kosuke, Keisuke Iwata, Masamitsu Onishi, et al.. (2021). BASIC SURVEY OF ATTITUDES AND BEHAVIORS UNDER STATE OF EMERGENCY BY COVID-19 IN JAPAN. Journal of Japan Society of Civil Engineers Ser D3 (Infrastructure Planning and Management). 77(2). 129–140. 2 indexed citations

16.

Maruta, Akinori, Keisuke Iwata, Takuji Iwashita, et al.. (2020). Factors affecting technical success of endoscopic transpapillary gallbladder drainage for acute cholecystitis. Journal of Hepato-Biliary-Pancreatic Sciences. 27(7). 429–436. 30 indexed citations

17.

Doi, Shinpei, Ichiro Yasuda, Masatoshi Mabuchi, et al.. (2018). Hybrid procedure combining endoscopic gallbladder lavage and internal drainage with elective cholecystectomy for acute cholecystitis: A prospective pilot study (The BLADE study). Digestive Endoscopy. 30(4). 501–507. 22 indexed citations

18.

Iwashita, Takuji, Ichiro Yasuda, Shinpei Doi, et al.. (2011). Use of Samples From Endoscopic Ultrasound–Guided 19-Gauge Fine-Needle Aspiration in Diagnosis of Autoimmune Pancreatitis. Clinical Gastroenterology and Hepatology. 10(3). 316–322. 117 indexed citations

19.

Fukutomi, Yasushi, Masahiro Tajika, Kenji Yamazaki, et al.. (2004). A CASE OF ULCERATIVE COLITIS ASSOCIATED WITH SEPSIS AND INTRA VERTEBRAL CANAL ABSCESS INDUCED BY ORAL ADMINISTRATION OF POLYETHYLENE GLYCOL ELECTROLYTE LAVAGE SOLUTION. Acta gastro-enterologica belgica. 46(6). 1181–1185. 2 indexed citations

20.

Iwata, Keisuke, et al.. (1993). A Case of Zenker's Diverticulum Associated with Thyroid Adenoma.. The Japanese Journal of Gastroenterological Surgery. 26(7). 2026–2030.

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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