{"id":"4c979ba5-357a-4eeb-b853-7d1fd3103fc4","slug":"regression-of-retro-odontoid-pseudotumor-following-botulinum-injection-into-cervical-muscles","title":"Regression of retro-odontoid pseudotumor following botulinum injection into cervical muscles","authors":["Masahiro Kawanishi","Hidekazu Tanaka","Yutaka Ito","Makoto Yamada","Kunio Yokoyama","Naokado Ikeda","Akira Sugie"],"abstract":"Background: Posterior fixation of C1/2 has become more commonly performed to treat retro-odontoid pseudotumor (ROP). Here, we report a 60-year-old female with cervical dystonia (CD), whose ROP regressed and whose quadriparesis improved after a series of cervical intramuscular botulinum injections. Case Description: A 60-year-old female with 30 years of CD newly presented with a progressive quadriparesis. When the MRI showed ROP compression the cervical spinal cord, she refused surgery and underwent multiple cervical muscular botulinum injections over the next 2 years. Following these injections, the patient’s quadriparesis improved as the ROP regressed on subsequent MR studies. Conclusion: Over a 2-year period, multiple cervical botulinum injections caused regression of a retro-odontoid cervical pseudotumor improvement in the patient’s quadriparesis.","thumbnailUrl":"https://sni-digital-videos.s3.amazonaws.com/articles/4c979ba5-357a-4eeb-b853-7d1fd3103fc4/featured/hero-1781561163280.png","publishDate":"2022-07-22T00:00:00.000Z","doi":"10.25259/SNI_606_2022","categories":["Spine","Case Report"],"fullTextUrl":"https://surgicalneurologyint.com/api/articles/4c979ba5-357a-4eeb-b853-7d1fd3103fc4/pdf"}