{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,4,1]],"date-time":"2022-04-01T23:26:06Z","timestamp":1648855566398},"reference-count":14,"publisher":"Scientific Scholar","content-domain":{"domain":["surgicalneurologyint.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"<jats:sec id=\"st1\">\n<jats:title>Background: <\/jats:title>\n<jats:p>Periodontoid pseudotumoral lesions (PPL) are an uncommon cause of cervical pain and myelopathy. In addition, they may be associated with atlantoaxial instability (AAI).<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"st2\">\n<jats:title>Case Description: <\/jats:title>\n<jats:p>Two patients over 60 years of age presented with neck pain alone. Their MR scans showed expansive lesions involving the odontoid process. One patient with AAI required an occipitocervical arthrodesis, while the other patient without instability was managed with an external orthosis (Philadelphia collar). Both of them experienced full resolution of pain and remained neurologically intact an average 36 months later (range 24\u201348).<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"st3\">\n<jats:title>Conclusion: <\/jats:title>\n<jats:p>Here, we discussed the clinical, MR, and non-surgical (without AAI) versus surgical management (with AAI) for different types of PPL.<\/jats:p>\n<\/jats:sec>","DOI":"10.25259\/sni_588_2021","type":"journal-article","created":{"date-parts":[[2021,8,8]],"date-time":"2021-08-08T19:27:59Z","timestamp":1628450879000},"page":"403","update-policy":"http:\/\/dx.doi.org\/10.25259\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Periodontoid pseudotumoral lesions"],"prefix":"10.25259","volume":"12","author":[{"given":"Andrew Vin\u00edcius","family":"de Souza Batista","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guilherme Brasileiro","family":"de Aguiar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Priscilla","family":"Bennett","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9 Carlos Esteves","family":"Veiga","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"10894","published-online":{"date-parts":[[2021,8,9]]},"reference":[{"key":"10.25259\/SNI_588_2021\/ref-1","doi-asserted-by":"crossref","first-page":"S879","DOI":"10.1007\/s00586-013-3004-1","article-title":"Disappearance of degenerative, non-inflammatory, retro-odontoid pseudotumor following posterior C1-C2 fixation: Case series and review of the literature","volume":"22","author":"Barbagallo","year":"2013","journal-title":"Eur Spine J"},{"key":"10.25259\/SNI_588_2021\/ref-2","doi-asserted-by":"crossref","first-page":"507","DOI":"10.1590\/1806-9282.66.4.507","article-title":"Retro-odontoid pseudotumor: 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Connect"},{"key":"10.25259\/SNI_588_2021\/ref-9","doi-asserted-by":"crossref","first-page":"1763","DOI":"10.1097\/BRS.0000000000002222","article-title":"Postoperative regression of retro-odontoid pseudotumor after atlantoaxial posterior fixation: 11 years of experience in patients with atlantoaxial instability","volume":"42","author":"Park","year":"2017","journal-title":"Spine (Phila Pa 1976)"},{"key":"10.25259\/SNI_588_2021\/ref-10","doi-asserted-by":"crossref","first-page":"100","DOI":"10.1016\/j.wneu.2018.10.011","article-title":"Retro-odontoid pseudotumor without radiologic atlantoaxial instability: A systematic review","volume":"121","author":"Robles","year":"2019","journal-title":"World Neurosurg"},{"key":"10.25259\/SNI_588_2021\/ref-11","doi-asserted-by":"crossref","first-page":"364","DOI":"10.1016\/j.wneu.2017.04.028","article-title":"The effects of clinical factors and retro-odontoid soft tissue thickness on atlantoaxial instability in patients with rheumatoid 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