Patterns of Intrathecal Ossification in Arachnoiditis Ossificans: A Retrospective Case Series.
Journal
AJNR. American journal of neuroradiology
ISSN: 1936-959X
Titre abrégé: AJNR Am J Neuroradiol
Pays: United States
ID NLM: 8003708
Informations de publication
Date de publication:
02 2023
02 2023
Historique:
received:
27
10
2022
accepted:
19
12
2022
pmc-release:
01
02
2024
pubmed:
13
1
2023
medline:
4
2
2023
entrez:
12
1
2023
Statut:
ppublish
Résumé
Arachnoiditis ossificans is an uncommon end-stage appearance of chronic adhesive arachnoiditis. Imaging features of arachnoiditis ossificans are characteristic and should be diagnosed to avoid unnecessary intervention and guide prognosis and management. In this case series, we retrospectively analyzed CT and MR imaging of 41 patients to identify common patterns of intrathecal ossification and present the common etiologies. Thirty-two patients had a confirmed history of spinal instrumentation, 7 were discovered on imaging without prior surgical history, 1 had a history of ankylosing spondylitis, and 1 had trauma. The most frequent site of ossification was at the conus and cauda equina. Four patterns of ossification were identified, including central, nerve root encasing, weblike, and peripheral. Arachnoiditis ossificans is an important, likely under-recognized consideration in patients who present with back pain. Diagnosis can be made readily on CT; MR imaging diagnosis is also possible but may be challenging.
Identifiants
pubmed: 36635055
pii: ajnr.A7764
doi: 10.3174/ajnr.A7764
pmc: PMC9891321
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
228-234Informations de copyright
© 2023 by American Journal of Neuroradiology.
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