Willem Niesen

934 total citations
14 papers, 452 citations indexed

About

Willem Niesen is a scholar working on Oncology, Surgery and Epidemiology. According to data from OpenAlex, Willem Niesen has authored 14 papers receiving a total of 452 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Oncology, 7 papers in Surgery and 7 papers in Epidemiology. Recurrent topics in Willem Niesen's work include Pancreatic and Hepatic Oncology Research (13 papers), Neuroendocrine Tumor Research Advances (7 papers) and Pancreatitis Pathology and Treatment (6 papers). Willem Niesen is often cited by papers focused on Pancreatic and Hepatic Oncology Research (13 papers), Neuroendocrine Tumor Research Advances (7 papers) and Pancreatitis Pathology and Treatment (6 papers). Willem Niesen collaborates with scholars based in Germany, Austria and Switzerland. Willem Niesen's co-authors include Oliver Strobel, Markus W. Büchler, Thilo Hackert, Ulf Hinz, Thomas Hank, Alexis Ulrich, Christoph Michalski, Christine Tjaden, Jörg Kaiser and Frank Bergmann and has published in prestigious journals such as Annals of Surgery, British journal of surgery and European Journal of Surgical Oncology.

In The Last Decade

Willem Niesen

14 papers receiving 447 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Willem Niesen Germany	9	408	189	185	142	122	14	452
Moriaki Tomikawa Japan	11	475 1.2×	208 1.1×	259 1.4×	155 1.1×	99 0.8×	23	529
Yoriko Takezako Japan	7	293 0.7×	188 1.0×	182 1.0×	97 0.7×	77 0.6×	13	408
Quisette P. Janssen Netherlands	11	373 0.9×	199 1.1×	155 0.8×	115 0.8×	163 1.3×	26	429
Volker Lakner Germany	5	385 0.9×	122 0.6×	114 0.6×	115 0.8×	157 1.3×	7	451
C Reiser Germany	2	444 1.1×	190 1.0×	237 1.3×	129 0.9×	117 1.0×	2	480
Victor Hugo Fonseca de Jesus Brazil	12	247 0.6×	173 0.9×	134 0.7×	60 0.4×	84 0.7×	57	410
Y Matsuyama Japan	5	381 0.9×	144 0.8×	174 0.9×	138 1.0×	190 1.6×	8	486
Jörg Seraphin Germany	6	585 1.4×	233 1.2×	163 0.9×	199 1.4×	265 2.2×	7	629
Milena Sachsenmaier Germany	5	454 1.1×	224 1.2×	195 1.1×	159 1.1×	160 1.3×	7	481
Paolo Regi Italy	11	485 1.2×	198 1.0×	187 1.0×	242 1.7×	68 0.6×	21	579

Countries citing papers authored by Willem Niesen

Since Specialization

Citations

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

Fields of papers citing papers by Willem Niesen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Willem Niesen

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

All Works

Sort: Min cites: Since: Top N: Style:

14 of 14 papers shown

Kaiser, Jörg, Willem Niesen, Ulf Hinz, et al.. (2025). Reconsidering Abdominal Drainage After Left Pancreatectomy - The Randomized Controlled PANDRA II Trial. Pancreatology. 25(7). 1380–1380. 1 indexed citations

Kaiser, Jörg, Willem Niesen, Ulf Hinz, et al.. (2025). Reconsidering Abdominal Drainage After Left Pancreatectomy. Annals of Surgery. 282(2). 203–209. 2 indexed citations

Leonhardt, Carl-Stephan, Willem Niesen, Dietmar Pils, et al.. (2023). Patient reported outcomes of duodenum-preserving pancreatic head resection in chronic pancreatitis: high effectivity is impaired by prolonged non-surgical management. HPB. 26(1). 73–82. 1 indexed citations

Leonhardt, Carl-Stephan, Willem Niesen, Eva Kalkum, et al.. (2022). Prognostic relevance of the revised R status definition in pancreatic cancer: meta-analysis. BJS Open. 6(2). 21 indexed citations

Kaiser, Jörg, Ulf Hinz, Philipp Mayer, et al.. (2021). Clinical presentation and prognosis of adenosquamous carcinoma of the pancreas – Matched-pair analysis with pancreatic ductal adenocarcinoma. European Journal of Surgical Oncology. 47(7). 1734–1741. 17 indexed citations

Strobel, Oliver, P. Lorenz, Ulf Hinz, et al.. (2020). Actual Five-year Survival After Upfront Resection for Pancreatic Ductal Adenocarcinoma. Annals of Surgery. 275(5). 962–971. 94 indexed citations

Kaiser, Jörg, Willem Niesen, Pascal Probst, et al.. (2019). Abdominal drainage versus no drainage after distal pancreatectomy: study protocol for a randomized controlled trial. Trials. 20(1). 332–332. 10 indexed citations

Niesen, Willem, Thomas Hank, Markus W. Büchler, & Oliver Strobel. (2019). Local radicality and survival outcome of pancreatic cancer surgery. Annals of Gastroenterological Surgery. 3(5). 464–475. 37 indexed citations

Niesen, Willem, Florian Primavesi, Silvia Gasteiger, et al.. (2019). Surgical and local therapeutic concepts of oligometastatic pancreatic cancer in the era of effective chemotherapy. European surgery. Supplement/European surgery. 51(3). 153–164. 3 indexed citations

10.

Klompmaker, Sjors, Niek A. Peters, Jony van Hilst, et al.. (2018). outcomes and risk score for distal pancreatectomy with celiac axis resection (DP-CAR score): An international multicenter analysis. HPB. 20. S294–S294. 1 indexed citations

11.

Hank, Thomas, Ulf Hinz, Ignazio Tarantino, et al.. (2018). Validation of at least 1 mm as cut-off for resection margins for pancreatic adenocarcinoma of the body and tail. British journal of surgery. 105(9). 1171–1181. 74 indexed citations

12.

Hackert, Thilo, Willem Niesen, Ulf Hinz, et al.. (2016). Radical surgery of oligometastatic pancreatic cancer. European Journal of Surgical Oncology. 43(2). 358–363. 159 indexed citations

13.

Niesen, Willem, Ulf Hinz, Oliver Strobel, et al.. (2016). Radical surgery of oligometastatic pancreatic cancer. Pancreatology. 16(3). S54–S55. 12 indexed citations

14.

Koellensperger, Eva, Willem Niesen, Jonas Kolbenschlag, et al.. (2013). Human Adipose Tissue Derived Stem Cells Promote Liver Regeneration in a Rat Model of Toxic Injury. Stem Cells International. 2013. 1–10. 20 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.

Explore authors with similar magnitude of impact