John Gásdal Karstensen

2.1k total citations · 1 hit paper
108 papers, 1.2k citations indexed

About

John Gásdal Karstensen is a scholar working on Surgery, Oncology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, John Gásdal Karstensen has authored 108 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 63 papers in Surgery, 57 papers in Oncology and 37 papers in Pulmonary and Respiratory Medicine. Recurrent topics in John Gásdal Karstensen's work include Pancreatic and Hepatic Oncology Research (35 papers), Genetic factors in colorectal cancer (28 papers) and Pancreatitis Pathology and Treatment (26 papers). John Gásdal Karstensen is often cited by papers focused on Pancreatic and Hepatic Oncology Research (35 papers), Genetic factors in colorectal cancer (28 papers) and Pancreatitis Pathology and Treatment (26 papers). John Gásdal Karstensen collaborates with scholars based in Denmark, Italy and Netherlands. John Gásdal Karstensen's co-authors include Peter Vilmann, Jakob Hendel, Srdan Novovic, Mikkel Parsberg Werge, Amer Hadi, Klaus Tjelle Kristiansen, Ulf Gøttrup Pedersen, Lise Lotte Gluud, Pia Klausen and Bojan Kovacevic and has published in prestigious journals such as SHILAP Revista de lepidopterología, Gastroenterology and Gut.

In The Last Decade

John Gásdal Karstensen

94 papers receiving 1.2k citations

Hit Papers

Endoscopic diagnosis and management of esophagogastric va... 2022 2026 2023 2024 2022 25 50 75 100
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Endoscopic diagnosis and management of esophagogastric variceal hemorrhage: European Society of Gastrointestinal Endoscopy (ESGE) Guideline
    2022 110 citations John Gásdal Karstensen et al. Endoscopy profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
John Gásdal Karstensen Denmark 19 723 471 274 272 264 108 1.2k
Montserrat Andreu Spain 19 427 0.6× 455 1.0× 523 1.9× 207 0.8× 549 2.1× 45 1.3k
Burhan Şahın Türkiye 23 1.1k 1.5× 297 0.6× 238 0.9× 637 2.3× 152 0.6× 92 1.5k
Yu‐Meng Tan Singapore 24 1.3k 1.8× 889 1.9× 431 1.6× 507 1.9× 98 0.4× 60 1.9k
Dominique Béchade France 15 349 0.5× 235 0.5× 198 0.7× 262 1.0× 88 0.3× 89 927
Tushar Kanti Chattopadhyay India 24 1.4k 1.9× 491 1.0× 148 0.5× 867 3.2× 87 0.3× 84 1.7k
Nihar Ranjan Dash India 19 703 1.0× 369 0.8× 157 0.6× 394 1.4× 151 0.6× 93 1.1k
Domenico Piscitelli Italy 17 543 0.8× 191 0.4× 191 0.7× 205 0.8× 97 0.4× 85 1.0k
Louise Barbier France 24 870 1.2× 588 1.2× 440 1.6× 370 1.4× 54 0.2× 75 1.5k
Eduardo Rodrigues‐Pinto Portugal 16 683 0.9× 349 0.7× 242 0.9× 344 1.3× 237 0.9× 90 961
Catherine E. Hagen United States 15 271 0.4× 348 0.7× 123 0.4× 222 0.8× 50 0.2× 64 797

Countries citing papers authored by John Gásdal Karstensen

Since Specialization
Citations

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

Fields of papers citing papers by John Gásdal Karstensen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John Gásdal Karstensen. 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 John Gásdal Karstensen. The network helps show where John Gásdal Karstensen may publish in the future.

Co-authorship network of co-authors of John Gásdal Karstensen

This figure shows the co-authorship network connecting the top 25 collaborators of John Gásdal Karstensen. A scholar is included among the top collaborators of John Gásdal Karstensen 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 John Gásdal Karstensen. John Gásdal Karstensen 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.
Johannesen, Katrine M., John Gásdal Karstensen, Emma Scott, et al.. (2025). A Novel Case of Biallelic MLH3 Variants in a Patient With Rectal Cancer and Polyps. Clinical Genetics. 107(4). 480–482. 3 indexed citations
2.
Karstensen, John Gásdal, Wafaa Ahmed, Andrea Anderloni, et al.. (2025). Performance measures for endoscopic ultrasound: a European Society of Gastrointestinal Endoscopy (ESGE) Quality Improvement Initiative – Update 2025. Endoscopy. 58(1). 91–101.
3.
Maida, Marcello, Giacomo Emanuele Maria Rizzo, Mario Traina, et al.. (2025). Optimal timing for lumen-apposing metal stent removal following endoscopic ultrasound-guided drainage of pancreatic fluid collections: a systematic review and meta-analysis. Endoscopy. 57(9). 1023–1033. 1 indexed citations
4.
Søndergaard, Bo, John Gásdal Karstensen, Martin G. Tolsgaard, et al.. (2025). Training esophagogastroduodenoscopy skills: a randomized multicenter trial comparing simulation-based training versus clinical training. Endoscopy. 58(1). 56–63.
5.
6.
Karstensen, John Gásdal, et al.. (2024). Endoscopic treatment options in peptic ulcer bleeding. Ugeskrift for Læger. 186(35). 1–8. 1 indexed citations
7.
Sinonquel, Pieter, Tom Seerden, Alexander Bodelier, et al.. (2024). Dye-based chromoendoscopy versus i-scan virtual chromoendoscopy in long-standing ulcerative colitis: Multicenter prospective RCT. SHILAP Revista de lepidopterología. 12(11). E1386–E1391.
8.
Jelsig, Anne Marie, John Gásdal Karstensen, & Thomas van Overeem Hansen. (2024). Progress report: Peutz–Jeghers syndrome. Familial Cancer. 23(4). 409–417. 3 indexed citations
9.
10.
Karstensen, John Gásdal, Steffen Bülow, Klaus Kaae Andersen, et al.. (2024). CANCER AND SURGICAL RISKS IN ATTENUATED AND CLASSICAL FAMILIAL ADENOMATOUS POLYPOSIS: INSIGHTS FROM A DANISH NATIONWIDE COHORT WITH MATCHED, NON-EXPOSED INDIVIDUALS. Gastrointestinal Endoscopy. 99(6). AB586–AB586. 1 indexed citations
11.
Hadi, Amer, et al.. (2024). Circulating Biomarkers Involved in the Development of and Progression to Chronic Pancreatitis—A Literature Review. Biomolecules. 14(2). 239–239. 5 indexed citations
12.
Ebrahim, Mohamed, et al.. (2024). Prediction of Admission to Intensive Care Unit and 1-Year Mortality After Acute Pancreatitis With Walled-Off Pancreatic Necrosis. Pancreas. 53(5). e386–e394. 1 indexed citations
13.
Kovacevic, Bojan, Peter Vilmann, Linea Cecilie Melchior, et al.. (2023). Validation of a Novel EUS-FNB-Derived Organoid Co-Culture System for Drug Screening in Patients with Pancreatic Cancer. Cancers. 15(14). 3677–3677. 6 indexed citations
14.
Ebrahim, Mohamed, Srdan Novovic, Palle Nordblad Schmidt, Erik Feldager Hansen, & John Gásdal Karstensen. (2023). Transrectal and transcolonic endoscopic ultrasound-guided drainage and necrosectomy in walled-off pancreatic necrosis: a retrospective, single-center case series. Endoscopy. 55(S 02). S261–S261.
15.
Aelvoet, Arthur S., John Gásdal Karstensen, Barbara A.J. Bastiaansen, et al.. (2023). Cold snare polypectomy for duodenal adenomas in familial adenomatous polyposis: a prospective international cohort study. SHILAP Revista de lepidopterología. 11(11). E1056–E1062. 3 indexed citations
16.
Ebrahim, Mohamed, Srdan Novovic, Palle Nordblad Schmidt, Erik Feldager Hansen, & John Gásdal Karstensen. (2023). EUS-guided transcolonic drainage and necrosectomy in walled-off necrosis: a retrospective, single-center case series. SHILAP Revista de lepidopterología. 11(6). E618–E622. 2 indexed citations
17.
Karstensen, John Gásdal, Klaus Kaae Andersen, Steffen Bülow, et al.. (2023). Psychiatric and Educational Aspects of Familial Adenomatous Polyposis: A Nationwide Danish Cohort Study With Matched Nonexposed Individuals. The American Journal of Gastroenterology. 119(5). 957–964. 5 indexed citations
18.
Jelsig, Anne Marie, Thomas van Overeem Hansen, Niels Qvist, et al.. (2023). Survival, surveillance, and genetics in patients with Peutz–Jeghers syndrome: A nationwide study. Clinical Genetics. 104(1). 81–89. 7 indexed citations
19.
Jelsig, Anne Marie, et al.. (2023). Cancer risk and mortality in patients with solitary juvenile polyps—A nationwide cohort study with matched controls. United European Gastroenterology Journal. 11(8). 745–749. 4 indexed citations
20.

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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