{"id":"7b14412c-2554-49eb-b283-4482ebd5404a","slug":"a-case-of-nonrheumatoid-retro-odontoid-pseudotumor-in-klippel-feil-syndrome-with-c1-occipitalization","title":"A case of nonrheumatoid retro-odontoid pseudotumor in Klippel-Feil syndrome with C1 occipitalization","authors":["Kimiya Sakamoto","Hisaaki Uchikado","Hayatsura Hanada","Ritsuro Inoue","Kouhei Nii","Toshio Higashi"],"abstract":"Background: Patients with both nonrheumatoid retro-odontoid pseudotumors (ROPTs) and congenital craniocervical junction (CCJ) abnormalities are rare. Here, a 73-year-old female presented with neck pain and myelopathy due to MR-documented ROPT with intramedullary hyperintensity at the CCJ warranting an occipital-cervical fusion. Case Description: A 73-year-old female originally developed occipitalgia and became quadriparetic within the subsequent 7 months. The cervical MR showed a ROPT with intramedullary hyperintensity at the CCJ. Further, the CT demonstrated C1 occipitalization and a congenital C2-3 fusion without radiological instability. After she underwent an occipito-C2 fusion, her symptoms improved. Conclusion: For patients with C1 occipitalization and a Klippel-Feil syndrome, ROPT may occur due to loading of C1-2 complex. These patients typically favorably respond to occipito-C2 fusion.","thumbnailUrl":"https://sni-digital-videos.s3.amazonaws.com/articles/7b14412c-2554-49eb-b283-4482ebd5404a/featured/hero-1781560846491.png","publishDate":"2022-10-21T00:00:00.000Z","doi":"10.25259/SNI_891_2022","categories":["Spine","Case Report"],"fullTextUrl":"https://surgicalneurologyint.com/api/articles/7b14412c-2554-49eb-b283-4482ebd5404a/pdf"}