Evidence map›Paper›PMID 33263942›Full record

ArticleAnnals of clinical and translational neurology2021

Resection of piriform cortex predicts seizure freedom in temporal lobe epilepsy.

Valeri Borger, Matthias Schneider, Julia Taube, Anna-Laura Potthoff, Vera C Keil, Motaz Hamed, Gülsah Aydin, Inja Ilic, László Solymosi, Christian E Elger and 6 more

Open access · goldAbstract read
In one paragraph

Article in Annals of clinical and translational neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
2.7field-weighted citation impact, top 9% 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

26 citing papers in PubMed, 39 citations in OpenAlex.

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  11. Review
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  15. Is there room in epilepsy for the claustrum?Frontiers in systems biology · 2024
    Article
  16. Review
  17. Extent of piriform cortex resection in children with temporal lobe epilepsy.Annals of clinical and translational neurology · 2023
    Article
  18. Article
  19. Article
  20. Towards network-guided neuromodulation for epilepsy.Brain : a journal of neurology · 2022
    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

16 authors at 2 institutions in 2 countries.

Valeri BorgerDepartment of Neurosurgery, University Hospital Bonn, Bonn, Germany.ORCID 0000-0002-5905-4121
Matthias SchneiderDepartment of Neurosurgery, University Hospital Bonn, Bonn, Germany.
Julia TaubeDepartment of Epileptology, University Hospital Bonn, Bonn, Germany.
Anna-Laura PotthoffDepartment of Neurosurgery, University Hospital Bonn, Bonn, Germany.
Vera C KeilDepartment of Neuroradiology, University Hospital Bonn, Bonn, Germany.
Motaz HamedDepartment of Neurosurgery, University Hospital Bonn, Bonn, Germany.
Gülsah AydinDepartment of Neurosurgery, University Hospital Bonn, Bonn, Germany.
Inja IlicDepartment of Neurosurgery, University Hospital Bonn, Bonn, Germany.
László SolymosiDepartment of Neuroradiology, University Hospital Bonn, Bonn, Germany.ORCID 0000-0001-9647-8647
Christian E ElgerDepartment of Epileptology, University Hospital Bonn, Bonn, Germany.
Erdem GüresirDepartment of Neurosurgery, University Hospital Bonn, Bonn, Germany.ORCID 0000-0001-8319-0847
Rolf FimmersInstitute of Medical Biometry, Informatics and Epidemiology, University Hospital Bonn, Bonn, Germany.
Patrick SchussDepartment of Neurosurgery, University Hospital Bonn, Bonn, Germany.
Christoph HelmstaedterDepartment of Epileptology, University Hospital Bonn, Bonn, Germany.
Rainer SurgesDepartment of Epileptology, University Hospital Bonn, Bonn, Germany.
Hartmut VatterDepartment of Neurosurgery, University Hospital Bonn, Bonn, Germany.
University Hospital Bonn · DEZimmer Biomet (Netherlands) · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTranssylvian selective amygdalo-hippocampectomy (tsSAHE) represents a generally recognized surgical procedure for drug-resistant mesial temporal lobe epilepsy (mTLE). Although postoperative seizure freedom can be achieved in about 70% of tsSAHE, there is a considerable amount of patients with persisting postoperative seizures. This might partly be explained by differing extents of resection of various tsSAHE target volumes. In this study we analyzed the resected proportions of hippocampus, amygdala as well as piriform cortex in regard of postoperative seizure outcome.

methodsBetween 2012 and 2017, 82 of 103 patients with mTLE who underwent tsSAHE at the authors' institution were included in the analysis. Resected proportions of hippocampus, amygdala and temporal piriform cortex as target structures of tsSAHE were volumetrically assessed and stratified according to favorable (International League Against Epilepsy (ILAE) class 1) and unfavorable (ILAE class 2-6) seizure outcome.

resultsPatients with favorable seizure outcome revealed a significantly larger proportion of resected temporal piriform cortex volumes compared to patients with unfavorable seizure outcome (median resected proportional volumes were 51% (IQR 42-61) versus (vs.) 13 (IQR 11-18), P = 0.0001). Resected proportions of hippocampus and amygdala did not significantly differ for these groups (hippocampus: 81% (IQR 73-88) vs. 80% (IQR 74-92) (P = 0.7); amygdala: 100% (IQR 100-100) vs. 100% (IQR 100-100) (P = 0.7)).

interpretationThese results strongly suggest temporal piriform cortex to constitute a key target resection volume to achieve seizure freedom following tsSAHE.

Indexed as

Treatment OutcomeAdultAmygdalaDrug Resistant EpilepsyEpilepsy, Temporal LobeFemaleHippocampusHumansMaleMiddle AgedNeurosurgical ProceduresPiriform Cortex

Identifiers

PMID33263942
PMCPMC7818082
OpenAlexW3110626719

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.