caa a22 4500 445357908 CHVBK 20180317142906.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10072-011-0695-0 doi (NATIONALLICENCE)springer-10.1007/s10072-011-0695-0 Neuroradiological diagnosis of Chiari malformations [Elektronische Daten] [Luisa Chiapparini, Veronica Saletti, Carlo Solero, Maria Bruzzone, Laura Valentini] Chiari malformations 1, 2, 3 represent different degrees of herniation of posterior fossa content into the cervical canal (Chiari 1 and 2), or through an upper-cervical meningocele (Chiari 3), whereas Chiari 4 anomaly consists of hypoplasia of the cerebellum. Chiari 1 malformation (CM1) is the commonest anomaly; it is probably related to a mesodermal defect that create a congenitally small posterior fossa, subsequent overcrowding of its contents and herniation through the foramen magnum. The diagnosis of CM1 is based on the demonstration of the downward displacement and particular shape of the cerebellar tonsils into the upper cervical spinal canal associated with obliteration of the subarachnoid spaces at the level of the foramen magnum. MRI has a fundamental role in the correct identification of the anatomical aspects of this malformation and associated anomalies and represents the imaging modality of choice. Springer-Verlag, 2011 Chiari 1 malformation nationallicence Posterior cranial fossa nationallicence Hydrosyringomyelia nationallicence Chiapparini Luisa Department of Neuroradiology, Foundation IRCCS Neurological Institute Carlo Besta, Milan, Italy aut Saletti Veronica Department of Child Neurology, Foundation IRCCS Neurological Institute Carlo Besta, Milan, Italy aut Solero Carlo Department of Neurosurgery, Foundation IRCCS Neurological Institute Carlo Besta, Milan, Italy aut Bruzzone Maria Department of Neuroradiology, Foundation IRCCS Neurological Institute Carlo Besta, Milan, Italy aut Valentini Laura Department of Neurosurgery, Foundation IRCCS Neurological Institute Carlo Besta, Milan, Italy aut Neurological Sciences Springer Milan 32(2011-12-01), 283-286 1590-1874 32<283 2011 32 10072 https://doi.org/10.1007/s10072-011-0695-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10072-011-0695-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chiapparini Luisa Department of Neuroradiology, Foundation IRCCS Neurological Institute Carlo Besta, Milan, Italy aut NATIONALLICENCE 700 1- Saletti Veronica Department of Child Neurology, Foundation IRCCS Neurological Institute Carlo Besta, Milan, Italy aut NATIONALLICENCE 700 1- Solero Carlo Department of Neurosurgery, Foundation IRCCS Neurological Institute Carlo Besta, Milan, Italy aut NATIONALLICENCE 700 1- Bruzzone Maria Department of Neuroradiology, Foundation IRCCS Neurological Institute Carlo Besta, Milan, Italy aut NATIONALLICENCE 700 1- Valentini Laura Department of Neurosurgery, Foundation IRCCS Neurological Institute Carlo Besta, Milan, Italy aut NATIONALLICENCE 773 0- Neurological Sciences Springer Milan 32(2011-12-01), 283-286 1590-1874 32<283 2011 32 10072 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer