ArticleFrontiers in surgery2022
Significance of Pseudomeningocele After Decompressive Surgery for Chiari I Malformation.
Article in Frontiers in surgery, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Endoscope-Assisted Versus Conventional Posterior Fossa Decompression with Duraplasty for Chiari I Malformation: A Single-Center Comparative Study.Medicina (Kaunas, Lithuania) · 2026Article
- Article
- A new concept and surgical approach for Chiari malformation type I based on the protection and strengthening of the myodural Bridge.Scientific reports · 2025Article
- Delayed dural graft breakdown and intracranial hypotension following posterior fossa decompression and duraplasty for Chiari malformation type I: illustrative case.Journal of neurosurgery. Case lessons · 2025Article
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Authors and funding
5 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Background: Pseudomeningoceles (PMCs) as abnormal collections of cerebrospinal fluid are quite common findings on follow-up MRI after Chiari decompression surgery (CDS). However, the importance of their identification has not been truly determined, especially when PMCs are described occasionally in the process of radiological follow-up. We retrospectively analyzed surgical outcomes and imaging findings after CDS depending upon the occurrence and thickness of PMCs. Methods: A total of 76 adult patients who underwent CDS were analyzed. The clinical and radiological outcomes of patients with a pseudomeningocele (wPMC) were evaluated and compared to those of patients without a pseudomeningocele (w/oPMC). Radiological morphometric measurements were performed and compared between groups. Comparisons of the maximal PMC thickness were made within the wPMC group. Results: PMCs were recognized in 27 (35.5%) patients, of whom 3 (11.1%) required reoperation. Differences in satisfactory result rates regarding gestalt assessment and Chicago Chiari Outcome Scale were statistically insignificant between the w/oPMC and wPMC groups ( Conclusions: We found no significant relationships between PMC presence or thickness and clinical or radiological outcomes. However, postoperative changes within the posterior fossa associated with PMCs resemble brain sagging, which occurs in intracranial hypotension. Therefore, extradural cerebrospinal fluid escape may also be responsible for symptoms in some patients with PMCs after CDS.
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