Evidence map›Paper›PMID 34815965›Full record

ReviewCardiovascular diagnosis and therapy2021

Nutcracker syndrome: diagnosis and therapy.

Marcin K Kolber, Zhonghao Cui, Christine K Chen, Peiman Habibollahi, Sanjeeva P Kalva

Open access · diamondAbstract readReview
In one paragraph

Review in Cardiovascular diagnosis and therapy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 1 pooled it
10.2field-weighted citation impact, top 1% of its field
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

49 citing papers in PubMed, 1 synthesis or guideline pooled it, 86 citations in OpenAlex.

  1. Pooled it
  2. Article
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  6. Article
  7. Article
  8. Review
  9. Article
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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. Review
  14. Article
  15. Article
  16. Article
  17. Left renal vein transposition as a treatment of refractory hypertension in nutcracker syndrome.Journal of vascular surgery cases and innovative techniques · 2025
    Article
  18. Article
  19. Article
  20. Review
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

5 authors at 2 institutions in 1 country.

Marcin K KolberDivision of Interventional Radiology, Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Zhonghao CuiUniversity of Texas Southwestern School of Medicine, Dallas, TX, USA.
Christine K ChenDivision of Interventional Radiology, Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Peiman HabibollahiDivision of Interventional Radiology, Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Sanjeeva P KalvaDivision of Interventional Radiology, Department of Radiology, Massachusetts General Hospital, Boston, MA, USA.
The University of Texas Southwestern Medical Center · USMassachusetts General Hospital · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Nutcracker syndrome (NCS) is an extrinsic compression of the left renal vein (LRV) by the superior mesenteric artery (SMA) anteriorly and aorta posteriorly resulting in renal vascular congestion manifesting as hematuria, proteinuria, orthostatic hypotension, pain, or even renal dysfunction. Long-standing venous compression can encourage collateral drainage pathways through gonadal and pelvic veins, which may explain reported symptom and syndrome overlap with pelvic congestion syndrome. Diagnosis can be challenging and variable, frequently involving a combination of ultrasound Doppler, cross-sectional, and invasive imaging. Often, intravascular pressure measurements are required to prove a renocaval pressure gradient to aid in a definitive diagnosis. Conservative management is appropriate, especially in children, who tend to outgrow the disorder. In the interim, medical management with angiotensin converting enzyme inhibitors (ACEIs) is a useful therapy to manage orthostatic hypotension in the pediatric population. In adults, invasive therapies are more frequently pursued. These are aimed at relieving the extrinsic compression on the LRV. The standard of care is renal vein transposition, with renal autotransplantation reserved for recalcitrant cases. Endovascular stenting is a less invasive option. Laparoscopic placement of an exovascular stent is a newer therapy intended to minimize trauma to the LRV. In this review, we will discuss the clinical manifestations, diagnostic criterion, imaging features, and conservative and surgical therapies for this condition.

Indexed as

hematurialeft renal vein (LRV)Nutcracker syndrome (NCS)vascular compression

Identifiers

PMID34815965
PMCPMC8569268
OpenAlexW3050375183

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.