Retro-Odontoid Pseudotumor without Atlantoaxial Subluxation or Rheumatic Arthritis / 대한신경손상학회지
Korean Journal of Neurotrauma
; : 180-184, 2016.
Article
in En
| WPRIM
| ID: wpr-122130
Responsible library:
WPRO
ABSTRACT
We present a case of retro-odontoid pseudotumor (ROP) without rheumatoid arthritis (RA) or atlantoaxial subluxation (AAS). A 76-year-old woman presented with paresthesia and weakness of both lower and upper extremities. She had no laboratory or physical findings of RA. Dynamic X-ray showed no AAS and magnetic resonance imaging (MRI) showed a retro-odontoid mass compressing the spinal cord. Transdural mass debulking and biopsy were performed via minimal left suboccipital craniectomy and C1 hemilaminectomy. Two months after surgery, her symptoms were aggravated. Follow-up MRI visualized mass re-growth and spinal cord compression due to the mass and AAS. Posterior C1-2 fixation was performed without further decompression. Twelve months after posterior fixation, no symptoms were apparent and follow-up MRI showed complete resolution of the ROP with C1-2 bony fusion. The ROP with C1-2 instability might be completely resolved only C1-2 fusion without decompression. Furthermore, we speculated that osteoarthritis of C1-2 itself causes a partial tear or degradation of the transverse ligament, that induced formation of ROP.
Key words
Full text:
1
Index:
WPRIM
Main subject:
Osteoarthritis
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Paresthesia
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Arthritis, Rheumatoid
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Rheumatic Fever
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Atlanto-Axial Joint
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Spinal Cord
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Spinal Cord Compression
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Tears
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Biopsy
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Magnetic Resonance Imaging
Type of study:
Observational_studies
/
Prognostic_studies
Limits:
Aged
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Female
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Humans
Language:
En
Journal:
Korean Journal of Neurotrauma
Year:
2016
Type:
Article