I have been working at the Netherlands Cancer Institute as a surgical oncologist with a focus on colorectal cancer since 2015. Over the past 20 years, I gained experience and expertise at the Maastricht UMC and researched colorectal cancer treatments, with a focus on the preservation of function and quality of life. I highly value being able to find the most suitable treatment plan for every single patient, together with my patients.
Selected publications from PubMed
Conventional Versus Videoscopic Inguinal Lymphadenectomy in Surgical Oncology: A Retrospective Observational Cohort Study.
Servaas N, Aldenhoven L, Spiekerman van Weezelenburg MA, van Haaren ERM, Janssen A, Meesters B, Vissers YLJ, Beets GL, van Bastelaar J
Ann Surg Oncol. 2026 Jun;33(6):4974-4984 doi: 10.1245/s10434-025-19041-7.
Exploring an Alternative Preoperative Sentinel Lymph Node Mapping Method Using a Magnetic Tracer and Magnetic Resonance Imaging for Melanoma Patients: SCARLETT Study Protocol.
Aldenhoven L, Frotscher C, Körver-Steeman R, Martens MH, Spiekerman van Weezelenburg MA, van Kuijk SMJ, Kuburic D, Janssen A, Vissers YLJ, van Haaren ERM, Quaedvlieg P, Beets GL, van Bastelaar J
Eur Surg Res. 2026;67(1):30-37 doi: 10.1159/000549828.
Nationwide analysis on the role of neoadjuvant radiotherapy and watch and wait in rectal cancer.
Mens DM, Coebergh van den Braak RRJ, Hilling DE, Meyer V, Sterk MFM, Buettner S, Bloemen J, Wijsmuller AR, Havenga K, van Westreenen HL, Verhoef C, Beets GL, Olthof PB
Eur J Surg Oncol. 2025 Sep;51(9):110179 doi: 10.1016/j.ejso.2025.110179.
Association of Lateral Pelvic Lymph Nodes with Disease Recurrence and Organ Preservation in Patients with Distal Rectal Adenocarcinoma Treated with Total Neoadjuvant Therapy.
Beets NRA, Verheij FS, Williams H, Omer DM, Lin ST, Qin LX, Beets GL, Beets-Tan RGH, Wei IH, Widmar M, Pappou EP, Weiser MR, Nash GM, Smith JJ, Paty PB, Miranda J, Kim TH, Gollub MJ, Garcia-Aguilar J
Ann Surg. 2025 Aug 1;282(2):311-318 doi: 10.1097/SLA.0000000000006305.
Salvageable locoregional recurrence and stoma rate after local excision of pT1-2 rectal cancer - A nationwide cross-sectional cohort study.
Moolenaar LR, van Geffen EGM, Hazen SJA, Sluckin TC, Beets GL, Leijtens JWA, Talsma AK, de Wilt JHW, Tanis PJ, Kusters M, Hompes R, Tuynman JB, Dutch Snapshot Research Group, Collaborators Snapshot Registry
Eur J Surg Oncol. 2025 Jun;51(6):109623 doi: 10.1016/j.ejso.2025.109623.
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