Evidence map›Paper›PMID 35115823›Full record

ArticleJournal of pain research2022

Large- and Small-Fiber Neuropathy in Patients with Tarlov Cysts.

Mieke Hulens, Frans Bruyninckx, Dietmar Rudolf Thal, Ricky Rasschaert, Chris Bervoets, Wim Dankaerts

Open access · goldAbstract read
In one paragraph

Article in Journal of pain research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.2field-weighted citation impact, top 23% 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

7 citing papers in PubMed, 6 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

6 authors at 1 institution in 1 country.

Mieke HulensDepartment of Rehabilitation Sciences, Musculoskeletal Rehabilitation Research Unit, Faculty of Kinesiology and Rehabilitation Sciences, KU Leuven, Leuven, Belgium.ORCID 0000-0002-2335-8772
Frans BruyninckxDepartment of Physical Medicine & Rehabilitation, EMG-Laboratory, University Hospitals of Leuven, Leuven, Belgium.ORCID 0000-0001-7731-2086
Dietmar Rudolf ThalDepartment of Imaging and Pathology, Laboratory of Neuropathology, and Leuven Brain Institute, KU Leuven, Leuven, Belgium.ORCID 0000-0002-1036-1075
Ricky RasschaertDepartment of Neurosurgery, AZ Rivierenland, Bornem, Belgium.ORCID 0000-0001-6690-7666
Chris BervoetsDepartment of Neurosciences, Adult Psychiatry, KU Leuven, Leuven, Belgium.ORCID 0000-0001-9842-2823
Wim DankaertsDepartment of Rehabilitation Sciences, Musculoskeletal Rehabilitation Research Unit, Faculty of Kinesiology and Rehabilitation Sciences, KU Leuven, Leuven, Belgium.ORCID 0000-0001-6616-9341
KU Leuven · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTarlov cysts (TCs) are dilated nerve root sheaths originating from increased cerebrospinal pressure. Patients with TCs often complain of neuropathic pain and paresthesia. The aim of this study was to retrospectively review intraepidermal nerve fiber density (IENFD) and electrodiagnostic (EDX) data from TC patients. PATIENTS AND

methodsLower leg skin biopsy results and EDX data from the L2-S4 myotomes of patients with lumbar or sacral TCs ≥8 mm were retrieved from a database of a physical medicine clinic. Patients with compressive pathology, diabetes mellitus and chemotherapy were excluded.

resultsIENFD data from 17 patients and EDX data from 24 patients with TCs ≥8 mm were available. The mean age was 47 ± 10y, and 83% were women. In 82% of patients, the IENFD was below the 5th percentile by age and sex. EDX showed increased Hoffmann reflex latencies in 25%, increased anal reflex latencies in 95%, and a patchy distribution of neurogenic motor unit potentials in 100%. More than 50% of needle EMG abnormalities appeared in myotomes unrelated to the location of the TCs.

conclusionSmall- and/or large-fiber neuropathy was documented in a significant proportion of patients with TCs. The novel findings may add to the understanding of the mechanisms involved in symptomatic TCs. We propose that pathologically elevated cerebrospinal fluid pressure not only dilates some of the nerve root sheaths to form TCs but also potentially damages axons in nondilated nerve root sheaths and neurons in the dorsal root ganglia.

Indexed as

anal reflexfibromyalgianerve conduction studiesperineural cystsradicular painskin biopsies

Identifiers

PMID35115823
PMCPMC8801331
OpenAlexW4207049800

What OpenQuestion holds

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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.