Retro-Odontoid Pseudotumor Without Radiographic Instability with Congenital C1 Assimilation and C2-C3 Fusion: A Case Report.

JBJS Case Connector
Viraj N GandbhirKshitij S Chaudhary

Abstract

The authors present a case of retro-odontoid pseudotumor (ROP) with congenital C1 assimilation and C2-C3 block vertebra without radiological instability who presented with cervical myelopathy with spastic quadriparesis. The patient was managed with occipitocervical fusion and C1 laminectomy. She had rapid neurological recovery in 3 months postoperatively and at 2 years had complete resolution of the retro-odontoid mass. C1 assimilation without apparent radiographic instability as a cause of ROP is underappreciated. This case report and review of literature highlight that C1 assimilation and C2-C3 fusion can lead to ROP even in the absence of apparent radiographic instability with posterior atlantoaxial fusion alone providing good results.

References

Feb 3, 2005·Neurologia Medico-chirurgica·Atul GoelDattatraya Muzumdar
Dec 31, 2005·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·Alfonso LagaresRamiro D Lobato
Feb 9, 2008·Surgical and Radiologic Anatomy : SRA·Serge MartellacciDenis Krausé
Jun 5, 2013·Journal of Spinal Disorders & Techniques·Takashi SonoMutsumi Matsushita
Sep 21, 2013·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·Giuseppe M V BarbagalloVincenzo Albanese
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Oct 14, 2018·World Neurosurgery·Luis A Robles, Greg M Mundis
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