Evidence map›Paper›PMID 34237827›Full record

ArticleUltrasonography (Seoul, Korea)2022

A preliminary study of shear-wave elastography for the evaluation of varicocele in adolescents and young adults.

Young Jin Ryu, Young Hun Choi, Ji Young Kim, Jung-Eun Cheon, Woo Sun Kim, In-One Kim, Ji Eun Park, Young Jae Im, Kwanjin Park

Open access · diamondAbstract read
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Article in Ultrasonography (Seoul, Korea), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.0field-weighted citation impact, top 24% 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

6 citing papers in PubMed, 7 citations in OpenAlex.

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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

9 authors at 2 institutions in 1 country.

Young Jin RyuDepartment of Radiology, Seoul National University Bundang Hospital, Seongnam, Korea.
Young Hun ChoiDepartment of Radiology, Seoul National University College of Medicine, Seoul, Korea.
Ji Young KimDepartment of Radiology, Seoul National University Bundang Hospital, Seongnam, Korea.
Jung-Eun CheonDepartment of Radiology, Seoul National University College of Medicine, Seoul, Korea.
Woo Sun KimDepartment of Radiology, Seoul National University College of Medicine, Seoul, Korea.
In-One KimDepartment of Radiology, Seoul National University College of Medicine, Seoul, Korea.
Ji Eun ParkDepartment of Radiology, Ajou University Medical Center, Suwon, Korea.
Young Jae ImDivision of Pediatric Urology, Seoul National University Children's Hospital, Seoul, Korea.
Kwanjin ParkDivision of Pediatric Urology, Seoul National University Children's Hospital, Seoul, Korea.
Seoul National University · KRAjou University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe purpose of this study was to use shear-wave elastography (SWE) to assess testicular stiffness changes during the Valsalva maneuver in adolescents and young adults with varicocele, to compare these changes according to clinical severity, and to evaluate the role of SWE in the diagnosis of varicocele.

methodsThis study included patients undergoing testicular ultrasonography for the diagnosis of varicocele or for post-varicocelectomy follow-up between June 2016 and February 2017. Fifty-four testicles of 27 consecutive patients (mean age, 15.9 years) were classified by clinical grade (grade 0-3). Using SWE, mean testicular stiffness (Emean) was measured at rest and during the Valsalva maneuver. The correlations between multiple ultrasonographic parameters (volume asymmetry, Emean at rest, and absolute and percentage changes in Emean during the Valsalva maneuver) and clinical grade were assessed using the Spearman correlation test.

resultsThe Emean at rest was similar across clinical grades. During the Valsalva maneuver, increased testicular stiffness was frequently observed in patients with grade 2 or 3 varicocele but rarely observed in those with grade 0 or 1 varicocele. The changes in Emean were positively correlated with the clinical grade (all P<0.001), whereas the Emean at rest and volume asymmetry were not (all P>0.05).

conclusionA transient, reversible increase in testicular stiffness during the Valsalva maneuver was observed in adolescents with high-grade varicocele, and the degree of stiffness change was correlated with the clinical grade. Stiffness change identified using SWE during the Valsalva maneuver is a potential surrogate indicator of venous congestion.

Indexed as

AdolescentsShear-wave elastographyTesticular stiffnessValsalva maneuverVaricocele

Identifiers

PMID34237827
PMCPMC8696133
OpenAlexW3162149267

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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.