Evidence map›Paper›PMID 39362632›Full record

ReviewJournal of vascular surgery. Venous and lymphatic disorders2025

Nutcracker syndrome (a Delphi consensus).

Floor Heilijgers, Peter Gloviczki, Gerry O'Sullivan, Bertrand Chavent, Efthymios D Avgerinos, Karem Harth, Stephen A Black, Young M Erben, Joris I Rotmans, Toby Richards and 11 more

Abstract readReviewConsensus Statement
In one paragraph

Review in Journal of vascular surgery. Venous and lymphatic disorders, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed.

  1. Article
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  5. The continuing challenge of Nutcracker syndrome.Journal of vascular surgery. Venous and lymphatic disorders · 2026
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  6. Article
  7. Article
  8. Review
  9. Review
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  11. Article
  12. Surgical management of Nutcracker syndrome caused by a middle mesenteric artery in an adolescent.Journal of vascular surgery cases and innovative techniques · 2026
    Article
  13. Article
  14. Article
  15. Left renal vein transposition as a treatment of refractory hypertension in nutcracker syndrome.Journal of vascular surgery cases and innovative techniques · 2025
    Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

21 authors.

Floor HeilijgersDepartment of Vascular Surgery, Leiden University Medical Center, Leiden, the Netherlands.
Peter GloviczkiDivision of Vascular and Endovascular Surgery, Mayo Clinic, Rochester, MN.
Gerry O'SullivanDepartment of Interventional Radiology, Galway University Hospital, Galway, Ireland.
Bertrand ChaventDepartment of Vascular Surgery, Clinique Générale, Annecy, France.
Efthymios D AvgerinosDepartment of Vascular Surgery, Athens Medical Center, University of Athens, Athens, Greece.
Karem HarthDepartment of Vascular Surgery, University Hospitals Cleveland Medical Center, Case Western Reserve, Cleveland, OH.
Stephen A BlackDepartment of Vascular Surgery, Ashtead Hospital, Ashtead, UK.
Young M ErbenDivision of Vascular and Endovascular Surgery, Mayo Clinic, Jacksonville, FL.
Joris I RotmansDepartment of Internal Medicine, Leiden University Medical Center, Leiden, the Netherlands.
Toby RichardsDepartment of Anesthesia and Perioperative Medicine, Monash University, Melbourne, Victoria, Australia; Department of Surgery, School of Health, Sport & Bioscience University of East London, London, UK.
Rabih A ChaerInstitute of Clinic Trials and Methodology, University College London, London, UK.
Laurencia VillalbaDepartment of Vascular Surgery, Wollongong Hospital, Wollongong, New South Wales, Australia.
Arjun JayarajDepartment of Vascular Surgery, The Rane Center for Venous and Lymphatic Disorders, Jackson, MS.
Rafael D MalgorDepartment of Vascular Surgery, University of Colorado Anschutz Medical Center, Aurora, CO.
Ramesh K TripathiDepartment of Vascular Surgery, University of Queensland, Brisbane, Queensland, Australia.
Anahita DuaDepartment of Vascular Surgery, Massachusetts General Hospital and Harvard University, Boston, MA.
Erin MurphyDepartment of Vascular Surgery, Atrium Health Sanger Heart and Vascular Institute, Charlotte, NC.
Simon RinckenbachDepartment of Vascular and Endovascular Surgery, University of Franche Comté, Besançon, France.
Suresh VedanthamMallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO.
Jaap F HammingDepartment of Vascular Surgery, Leiden University Medical Center, Leiden, the Netherlands.
Joost R van der VorstDepartment of Vascular Surgery, Leiden University Medical Center, Leiden, the Netherlands. Electronic address: j.r.van_der_vorst@lumc.nl.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNutcracker syndrome (NCS) describes the symptomatic compression of the left renal vein between the aorta and superior mesenteric artery. Whereas asymptomatic compression is a common radiological finding, patients with NCS can report a range of symptoms. There are no specific diagnostic criteria and interventions include a range of open surgical and endovascular procedures. Therefore, we wished to develop an international consensus document covering aspects of diagnosis, management, and follow-up for patients with NCS.

methodsA three-stage modified Delphi consensus was performed. A steering committee developed 37 statements covering 3 categories for patients with NCS: diagnosis, management, and follow-up. These statements were reported individually by 20 international experts in the management of venous disease, using a 5-point Likert scale. Consensus was defined if ≥70% of respondents rated the statement between 1 and 2 (agreement) and between 4 and 5 (disagreement). Those statements without consensus were recirculated in a second round of voting. A third round of the questionnaire was performed with 14 additional statements to clarify diagnostic values of NCS.

resultsResponses were returned by 20 of 20 experts (100%) in round one and 17 of 20 (85%) in round two. Initial consensus was reached in 24 of 37 statements (65%) spread over all categories. Round two achieved a further consensus on 5 out of 10 statements (50%). No categories reported consensus on all statements. In round two consensus was reached in the category of follow-up (4/5 statements [80%]). The final round reached consensus on 5 out of 14 statements (36%). Experts agreed that imaging is obligated to confirm NCS. Experts did not agree on specific diagnostic cut-off values. There was a consensus that the first choice of operative treatment is left renal vein transposition and that the risk of stent migration outweighs the advantages of a percutaneous procedure.

conclusionsConsensus was achieved on most statements concerning the assessment and management of NCS. This Delphi consensus identified those areas in which further research is needed, such as antiplatelet therapy, endovascular treatment, and renal autotransplantation. A rare disease registry to improve data and reports of patient outcomes is warranted.

Indexed as

Renal Nutcracker SyndromeDelphi TechniqueEndovascular ProceduresHumansPredictive Value of TestsRenal VeinsTreatment OutcomeEVS Renal AutotransplantationLRV LRV transposition Endovascular StentingNCS Delphi consensus Left Renal VeinNutcracker Syndrome

Identifiers

PMID39362632
PMCPMC11764206

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.