Geert A. Simkens

973 total citations
26 papers, 501 citations indexed

About

Geert A. Simkens is a scholar working on Surgery, Emergency Medicine and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Geert A. Simkens has authored 26 papers receiving a total of 501 indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Surgery, 14 papers in Emergency Medicine and 7 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Geert A. Simkens's work include Intraperitoneal and Appendiceal Malignancies (22 papers), Appendicitis Diagnosis and Management (14 papers) and Hernia repair and management (7 papers). Geert A. Simkens is often cited by papers focused on Intraperitoneal and Appendiceal Malignancies (22 papers), Appendicitis Diagnosis and Management (14 papers) and Hernia repair and management (7 papers). Geert A. Simkens collaborates with scholars based in Netherlands, United Kingdom and Denmark. Geert A. Simkens's co-authors include Ignace H. J. T. de Hingh, Simon W. Nienhuijs, H.J.T. Rutten, Thijs R. van Oudheusden, Koen P. Rovers, Misha Luyer, Grard A. P. Nieuwenhuijzen, V.E.P.P. Lemmens, Pieter J. Tanis and Cornelis J.A. Punt and has published in prestigious journals such as International Journal of Cancer, European Journal of Cancer and Medicine.

In The Last Decade

Geert A. Simkens

25 papers receiving 497 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Geert A. Simkens Netherlands	13	471	321	160	58	55	26	501
Salvatore Virzì Italy	13	637 1.4×	413 1.3×	335 2.1×	65 1.1×	48 0.9×	29	703
Peter Cashin Sweden	14	560 1.2×	406 1.3×	259 1.6×	56 1.0×	63 1.1×	42	623
H.J. Braam Netherlands	14	433 0.9×	297 0.9×	145 0.9×	68 1.2×	24 0.4×	19	494
Hugo Teixeira Farinha Switzerland	11	472 1.0×	245 0.8×	161 1.0×	65 1.1×	107 1.9×	32	524
Sanket Mehta India	12	426 0.9×	262 0.8×	236 1.5×	41 0.7×	28 0.5×	40	473
Brian Loggie United States	6	535 1.1×	419 1.3×	319 2.0×	34 0.6×	18 0.3×	6	577
Sebastián Rufián‐Peña Spain	13	450 1.0×	232 0.7×	206 1.3×	61 1.1×	38 0.7×	39	523
Elias Efstathiou Greece	11	470 1.0×	232 0.7×	324 2.0×	48 0.8×	21 0.4×	25	520
Laurent Ghouti France	12	506 1.1×	162 0.5×	99 0.6×	201 3.5×	53 1.0×	27	550
François‐Nöel Gilly France	8	326 0.7×	190 0.6×	130 0.8×	74 1.3×	27 0.5×	9	356

Countries citing papers authored by Geert A. Simkens

Since Specialization

Citations

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

Fields of papers citing papers by Geert A. Simkens

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Geert A. Simkens. 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 Geert A. Simkens. The network helps show where Geert A. Simkens may publish in the future.

Co-authorship network of co-authors of Geert A. Simkens

This figure shows the co-authorship network connecting the top 25 collaborators of Geert A. Simkens. A scholar is included among the top collaborators of Geert A. Simkens 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 Geert A. Simkens. Geert A. Simkens 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:

20 of 20 papers shown

Erning, Felice N. van, et al.. (2025). Combined peritoneal and liver metastases in colorectal cancer: A Dutch nationwide population-based analysis of incidence, treatment and survival. European Journal of Surgical Oncology. 51(7). 109999–109999.

Boshier, Piers R., et al.. (2024). Outcomes of intraperitoneal chemotherapy for the treatment of gastric cancer with peritoneal metastasis: A comprehensive systematic review and meta-analysis. European Journal of Surgical Oncology. 51(2). 109499–109499. 2 indexed citations

Simkens, Geert A., Ignace H. J. T. de Hingh, Marc J. van Det, et al.. (2023). The impact of hospital experience in bariatric surgery on short-term outcomes after minimally invasive esophagectomy: a nationwide analysis. Surgical Endoscopy. 38(2). 720–734. 1 indexed citations

Simkens, Geert A., Koen P. Rovers, Felice N. van Erning, et al.. (2023). Primary tumor resection or systemic treatment as palliative treatment for patients with isolated synchronous colorectal cancer peritoneal metastases in a nationwide cohort study. Clinical & Experimental Metastasis. 40(4). 289–298. 3 indexed citations

Simkens, Geert A., Ignace H. J. T. de Hingh, Misha Luyer, et al.. (2023). Peritoneal metastases from gastric cancer in a nationwide cohort: Incidence, treatment and survival. International Journal of Cancer. 154(6). 992–1002. 4 indexed citations

Simkens, Geert A., Kaatje Lenaerts, Gregor H. L. M. Franssen, et al.. (2022). Intraperitoneal drug delivery systems releasing cytostatic agents to target gastro-intestinal peritoneal metastases in laboratory animals: a systematic review. Clinical & Experimental Metastasis. 39(4). 541–579. 9 indexed citations

Simkens, Geert A., et al.. (2021). Effective Strategies to Predict Survival of Colorectal Peritoneal Metastases Patients Eligible for Cytoreductive Surgery and HIPEC. Cancer Management and Research. Volume 13. 5239–5249. 11 indexed citations

Bakkers, Checca, Geert A. Simkens, & Ignace H. J. T. de Hingh. (2021). Systemic therapy in addition to cytoreduction and hyperthermic intraperitoneal chemotherapy for colorectal peritoneal metastases: recent insights from clinical studies and translational research. Journal of Gastrointestinal Oncology. 12(S1). S206–S213. 7 indexed citations

Simkens, Geert A., et al.. (2018). Comparison of 2 Perioperative Management Protocols and Their Influence on Postoperative Recovery after Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy: Standard Parenteral Nutrition, Selective Bowel Decontamination and Suprapubic Catheters?. Digestive Surgery. 36(5). 394–401. 10 indexed citations

10.

Simkens, Geert A., Koen P. Rovers, Thijs R. van Oudheusden, et al.. (2018). Major influence of postoperative complications on costs of cytoreductive surgery and HIPEC in patients with colorectal peritoneal metastases. Medicine. 97(10). e0042–e0042. 13 indexed citations

11.

Simkens, Geert A., et al.. (2017). Synchronous peritoneal metastases of small bowel adenocarcinoma: Insights into an underexposed clinical phenomenon. European Journal of Cancer. 87. 84–91. 11 indexed citations

12.

Simkens, Geert A., Koen P. Rovers, Simon W. Nienhuijs, & Ignace H. J. T. de Hingh. (2017). Patient selection for cytoreductive surgery and HIPEC for the treatment of peritoneal metastases from colorectal cancer. Cancer Management and Research. Volume 9. 259–266. 52 indexed citations

13.

Rovers, Koen P., Geert A. Simkens, Pauline A. J. Vissers, et al.. (2017). Survival of patients with colorectal peritoneal metastases is affected by treatment disparities among hospitals of diagnosis: A nationwide population-based study. European Journal of Cancer. 75. 132–140. 14 indexed citations

14.

Simkens, Geert A., et al.. (2016). Histological subtype and systemic metastases strongly influence treatment and survival in patients with synchronous colorectal peritoneal metastases. European Journal of Surgical Oncology. 42(6). 794–800. 27 indexed citations

15.

Simkens, Geert A., Victor J. Verwaal, V.E.P.P. Lemmens, H.J.T. Rutten, & Ignace H. J. T. de Hingh. (2016). Short-term outcome in patients treated with cytoreduction and HIPEC compared to conventional colon cancer surgery. Medicine. 95(41). e5111–e5111. 15 indexed citations

16.

Simkens, Geert A., Thijs R. van Oudheusden, H.J.T. Rutten, et al.. (2016). Increased Survival of Patients with Synchronous Colorectal Peritoneal Metastases Receiving Preoperative Chemotherapy Before Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy. Annals of Surgical Oncology. 23(9). 2841–2848. 34 indexed citations

17.

Simkens, Geert A., Thijs R. van Oudheusden, H.J. Braam, et al.. (2015). Treatment-Related Mortality After Cytoreductive Surgery and HIPEC in Patients with Colorectal Peritoneal Carcinomatosis is Underestimated by Conventional Parameters. Annals of Surgical Oncology. 23(1). 99–105. 24 indexed citations

18.

Simkens, Geert A., Thijs R. van Oudheusden, Misha Luyer, et al.. (2015). Predictors of Severe Morbidity After Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy for Patients With Colorectal Peritoneal Carcinomatosis. Annals of Surgical Oncology. 23(3). 833–841. 33 indexed citations

19.

Simkens, Geert A.. (2014). Massive surgical emphysema following transanal endoscopic microsurgery. World Journal of Gastrointestinal Surgery. 6(8). 160–160. 6 indexed citations

20.

Simkens, Geert A., Thijs R. van Oudheusden, Misha Luyer, et al.. (2014). Serious Postoperative Complications Affect Early Recurrence After Cytoreductive Surgery and HIPEC for Colorectal Peritoneal Carcinomatosis. Annals of Surgical Oncology. 22(8). 2656–2662. 74 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