...A. Fiaschi; D. Orrico; A. Polo; M. Gerosa; A. Bricolo A case of cervical spinal arachnoidal cyst is presented. The association with basilar impression and Arnold-Chiari malformation is a peculiarity seldom reported. The clinical aspects with remission and exacerbation are discussed. The importance...

...Pietro Bassi; Claudio Corona; Patrizia Contri; Andrea Paiocchi; Mario Loiero; Alfonso Mangoni A series of 8 cases operated on for symptomatic basilar impression associated with occipitalization of the atlas is reported (with or without atlantoaxial dislocation). Symptoms of onset...

...L. Bareš Analysing the casuistry of 210 patients with basilar impression, the author has enumerated the type and frequency of the associated anomalies and looked for correlations between them and the various clinical syndromes. An attempt is made to divide the anomalies into pathogenetic groups...

...G. Hertel; M. Nadjmi; J. Kunze The attempt is made to show statistically how frequently basilar impression occurs in syringomyelia. The results indicate that one third of 81 cases of syringomyelia undoubtedly had a basilar impression. Independently of sex, age of onset, presence of spasticity...

... diseases: Paget’s disease,osteomalacia, osteogenesis imperfecta and localized bone destruction. Symptoms occur when the brainstem is compressed by the clivus or by the odontoid peg. About 80% of those with basilar impression have no associated Chiari malformation (group I); the remainder has both basilar...