ArticleNeurospine2021
Nonrheumatoid Retro-Odontoid Pseudotumors: Characteristics, Surgical Outcomes, and Time-Dependent Regression After Posterior Fixation.
Article in Neurospine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 11 citations in OpenAlex.
- Retro-Odontoid Calcium Pyrophosphate Deposition Pseudotumor Presenting with Isolated Hypoglossal Nerve Palsy: A Case Report.Journal of neurological surgery reports · 2026Article
- Retro-odontoid pseudotumor and subaxial spinal osteophytes: instability as the etiology and stabilization as the treatment. Illustrative cases.Journal of neurosurgery. Case lessons · 2026Article
- Regression of a ventral epidural mass after posterior stabilization for cervical spinal metastasis: illustrative case.Journal of neurosurgery. Case lessons · 2026Article
- Exoscope-assisted far-lateral approach for a retro-odontoid pseudotumor in the lateral position without fusion: a technical case report.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026Article
- Postoperative changes in location and size of retro-odontoid pseudotumor after upper cervical fusion without decompression.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026Article
- Technical nuances of a posterior transdural approach for resection of a compressive retro-odontoid cyst with 2D operative video and graphical illustration: illustrative case.Journal of neurosurgery. Case lessons · 2026Article
- Retro-Odontoid Pseudotumor in Atlantoaxial Instability: Insights Into Presence, Subtypes, and Postoperative Regression.Neurospine · 2025Article
- Novel Approach to Retro-Odontoid Pseudotumor Resection without Atlantoaxial Dislocation.The American journal of case reports · 2025Article
- Surgical treatment and clinical outcome in non-inflammatory atlantoaxial degeneration and retro-odontoid pseudotumor.Brain & spine · 2025Article
- Clinical and MR Predictors of Retro-Odontoid Pseudotumor Regression Following Posterior Fixation in Patients with Atlantoaxial Instability.Journal of the Korean Society of Radiology · 2024Article
- Surgical Versus Conservative Management for Treating Unstable Atlas Fractures: A Multicenter Study.Neurospine · 2022Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveAlthough a retro-odontoid pseudotumor associated with rheumatoid arthritis is a well-known clinical entity, little is known about retro-odontoid pseudotumors not associated with rheumatoid arthritis due to their rarity.
methodsBetween 2006 and 2019, consecutive patients with nonrheumatoid pseudotumors were included and retrospectively compared with patients with rheumatoid pseudotumors.
resultsNineteen patients had nonrheumatoid pseudotumors (mean age, 73 ± 6 years; male, 53%). All had cervical lesions including ossified anterior and posterior longitudinal ligaments with a history of cervical surgery in 5. The mean thickness of the pseudotumors at diagnosis was 8.1 mm (range, 4.2-17.2 mm). Pseudotumor thickness had a significant negative correlation with the atlantodental interval (p = 0.008) and the subaxial range of motion (p = 0.049). In comparison with 7 rheumatoid pseudotumor patients, nonrheumatoid pseudotumor patients were older (p = 0.042), had a higher proportion of males (p = 0.023), had a smaller atlantodental interval (p = 0.007), and had larger pseudotumors at diagnosis (p = 0.030). Of the 19 patients, 18 received posterior fixation with or without C1 laminectomy, while the other received C1 laminectomy alone. The percent pseudotumor thickness at follow-up to those at diagnosis was 91%, 77%, 68%, 46%, 58%, and 49% at 1, 3, 6, 12, 24, and 36 months after surgery, respectively.
conclusionThis study revealed markedly clinical and radiological differences between nonrheumatoid and rheumatoid pseudotumors. The main etiology for nonrheumatoid pseudotumors was subaxial cervical degeneration and ossified lesions. There were good outcomes following posterior fixation and time-dependent pseudotumor regression within 12 months.
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