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A crowded posterior fossa with Arnold Chiari type I malformation was seen on MRI evaluation, suggesting a rare association of osteopetrosis with Arnold Chiari\u2019s malformation.<\/jats:p>","DOI":"10.1136\/bcr-2023-254559","type":"journal-article","created":{"date-parts":[[2023,8,16]],"date-time":"2023-08-16T13:15:18Z","timestamp":1692191718000},"page":"e254559","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":2,"title":["Osteopetrosis with Arnold Chiari malformation type I"],"prefix":"10.1136","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3569-8771","authenticated-orcid":false,"given":"Alamelu","family":"Alagappan","sequence":"first","affiliation":[{"name":"Radiodiagnosis, All India Institute of Medical Sciences Bhubaneswar, Bhubaneswar, Odisha, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amit Kumar","family":"Satpathy","sequence":"additional","affiliation":[{"name":"Department of pediatrics, All India Institute of Medical Sciences Bhubaneswar, Bhubaneswar, Orissa, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Biswajit","family":"Sahoo","sequence":"additional","affiliation":[{"name":"Radiodiagnosis, All India Institute of Medical Sciences Bhubaneswar, Bhubaneswar, Odisha, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1146-2302","authenticated-orcid":false,"given":"Manoj Kumar","family":"Nayak","sequence":"additional","affiliation":[{"name":"Radiodiagnosis, All India Institute of Medical Sciences Bhubaneswar, Bhubaneswar, Odisha, India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2023,8,16]]},"reference":[{"key":"2025082709530224000_16.8.e254559.1","doi-asserted-by":"publisher","DOI":"10.1016\/8756-3282(88)90021-X"},{"key":"2025082709530224000_16.8.e254559.2","doi-asserted-by":"publisher","DOI":"10.1097\/00005792-196803000-00004"},{"key":"2025082709530224000_16.8.e254559.3","doi-asserted-by":"crossref","first-page":"e23","DOI":"10.1016\/j.ejrex.2010.08.001","article-title":"Autosomal recessive osteopetrosis with Arnold Chiari malformation type 1 and syringomyelia","volume":"76","author":"O\u2019Neill","year":"2010","journal-title":"European Journal of Radiology Extra"},{"key":"2025082709530224000_16.8.e254559.4","doi-asserted-by":"crossref","first-page":"412","DOI":"10.1007\/s12098-007-0070-6","article-title":"Osteopetrosis with Arnold Chiari malformation type I and brain stem compression","volume":"74","author":"Kulkarni","year":"2007","journal-title":"Indian J Pediatr"},{"key":"2025082709530224000_16.8.e254559.5","doi-asserted-by":"crossref","first-page":"369","DOI":"10.3171\/2011.1.PEDS10353","article-title":"Osteopetrosis with Chiari I malformation: presentation and surgical management","volume":"7","author":"Dlouhy","year":"2011","journal-title":"J Neurosurg Pediatr"},{"key":"2025082709530224000_16.8.e254559.6","doi-asserted-by":"crossref","DOI":"10.4076\/1757-1626-2-6787","article-title":"Lessons from a case of osteopetrosis oxycephaly and Chiari type I malformation: a case report","volume":"2","author":"Jamjoom","year":"2009","journal-title":"Cases J"},{"key":"2025082709530224000_16.8.e254559.7","doi-asserted-by":"crossref","DOI":"10.1093\/jscr\/rjv084","article-title":"Osteopetrosis and Chiari type I malformation: a rare association","volume":"2015","author":"Ekici","year":"2015","journal-title":"J Surg Case Rep"},{"key":"2025082709530224000_16.8.e254559.8","doi-asserted-by":"crossref","first-page":"34","DOI":"10.4103\/1817-1745.111420","article-title":"Infantile osteopetrosis, craniosynostosis, and Chiari malformation type I with novel OSTEM1 mutation","volume":"8","author":"Mahmoud Adel","year":"2013","journal-title":"J Pediatr Neurosci"},{"key":"2025082709530224000_16.8.e254559.9","doi-asserted-by":"crossref","first-page":"151","DOI":"10.4103\/ijo.IJO_1408_20","article-title":"Craniosynostosis, osteopetrosis, and Arnold-Chiari malformation type 1 \u2013 ophthalmic manifestations: a rare case report","volume":"1","author":"Warkad","year":"2021","journal-title":"Indian J Ophthalmol Case Rep"},{"key":"2025082709530224000_16.8.e254559.10","doi-asserted-by":"publisher","DOI":"10.1002\/ajmg.a.31483"},{"key":"2025082709530224000_16.8.e254559.11","doi-asserted-by":"crossref","DOI":"10.1186\/1750-1172-4-5","article-title":"Osteopetrosis","volume":"4","author":"Stark","year":"2009","journal-title":"Orphanet J Rare Dis"},{"key":"2025082709530224000_16.8.e254559.12","first-page":"152","article-title":"Clinicoradiological findings of benign osteopetrosis: report of two new cases","volume":"6","author":"Tohidi","year":"2012","journal-title":"J Dent Res Dent Clin Dent Prospects"},{"key":"2025082709530224000_16.8.e254559.13","doi-asserted-by":"crossref","unstructured":"Kaplan FS , August CS , Fallon MD , et al . 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