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DOI: 10.1055/s-0035-1570365
Chiari IV Malformation, the Lückenschädel and Sagittal Craniosynostosis Association: Case Report and Literature Review
Associação entre malformação de Chiari IV, Lückenschädel e craniossinostose sagital: relato de caso e revisão de literaturaPublikationsverlauf
02. Mai 2015
28. August 2015
Publikationsdatum:
29. Dezember 2015 (online)
![](https://www.thieme-connect.de/media/10.1055-s-00028832/201601/lookinside/thumbnails/10-1055-s-0035-1570365_00420161-1.jpg)
Abstract
The association between Lückenschädel and craniosynostosis is unusual and unknown. Genetic origin is a possibility, representing one of many possible phenotypes for mutation. To the best of our knowledge, the association of such anomalies in a type IV Chiari malformation has never been reported before. The authors present the case of a patient with obstructive hydrocephalus, diagnosed with Chiari IV malformation associated with Lückenschädel and sagittal craniosynostosis. The Lückenschädel is the bone abnormality least commonly associated with Chiari malformation. It consists of a defect in the bones of membranous origin that form the cranial vault. This anomaly arises from periosteal dysplasia, and is characterized by rounded and irregular gaps in the skull, bound by bony ridges. Craniosynostosis is due to premature fusion of the cranial sutures and is sometimes associated with the Chiari complex of malformations. The diagnostic of Lückenschädel and craniosynostosis is done by imaging, through which the skull assumes the aspect of a hive, characteristic of Lückenschädel and it is possible to see the premature fusion of the sutures. The Lückenschädel usually does not require treatment because of spontaneous resolution; whereas, craniosynostosis warrants surgery for aesthetic and functional reasons. The Chiari malformation IV only requires treatment when it results in syringomyelia or hydrocephalus.
Resumo
O Lückenschädel e a craniossinostose são uma associação incomum e pouco conhecida, com possível origem genética, o que representa um dos muitos fenótipos possíveis para uma mutação. Até onde sabemos, a associação destas anomalias em um caso de malformação de Chiari tipo IV não foi relatada antes. Os autores apresentam o caso de um paciente com hidrocefalia obstrutiva, que foi diagnosticado com malformação de Chiari tipo IV associada com Lückenschädel e craniossinostose sagital. O Lückenschädel é a anormalidade óssea menos comum associada com a malformação de Chiari. É constituída por um defeito nos ossos de origem membranosa que formam a abóbada craniana. Esta anomalia surge de displasia do periósteo e é caracterizada por falhas arredondadas e irregulares no crânio, delimitadas por cristas ósseas. A craniossinostose se deve à fusão prematura das suturas cranianas e é por vezes associada com o complexo de malformações de Chiari. Os diagnósticos de Lückenschädel e craniossinostose são feitos por imagem, onde o crânio assume um aspecto de colmeia, característico de Lückenschädel, e é possível ver a fusão prematura das suturas. O Lückenschädel geralmente não requer tratamento por causa de resolução espontânea e craniosynostosis necessita de cirurgia para fins estéticos e funcionais. A malformação de Chiari IV só requer tratamento quando resulta em siringomielia ou hidrocefalia.
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