title: [Drop attacks as a manifestation of occipital vertebra].
abstract: A proatlas, a type of manifestation of occipital vertebrae, was found in a female aged 64 with drop attacks. X-ray films and computed tomography of the craniocervical region disclosed the malformation. Magnetic resonance imaging of the same area and the posterior fossa discarded the presence of associated neural involvement, but gave no additional information about the nature of the process. Doppler-ultrasonographic study of the vertebral arteries and X-rays of the flexed and extended cervical spine failed to demonstrate the mechanism by which drop attacks were elicited.
authors.affiliation: Sección de Neurología, Hospital Central de la Cruz Roja, Madrid.
authors.forename: A
authors.initials: A
authors.lastname: Gil-Nagel
authors.forename: L
authors.initials: L
authors.lastname: Morlán
authors.forename: J
authors.initials: J
authors.lastname: Balseiro
authors.forename: J L
authors.initials: JL
authors.lastname: González Preciado
authors.forename: P
authors.initials: P
authors.lastname: Martínez Martín
mesh_terms: D000058:Accidental Falls; D002574:Cervical Vertebrae / Q000002:abnormalities*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009777:Occipital Bone / Q000002:abnormalities*
vernacular_title: Drop attacks como manifestación de la vértebra occipital.