RESUMO
Forty-seven cases with intrasellar cisternal herniation (empty sella) examined by plain X-ray of the skull and pneumoencephalography have been reviewed. Although the diagnosis may frequently be anticipated from the plain X-ray findings, further studies are necessary to establish the diagnosis. Also the type of herniation, whether horizontal, anterior or complete, may be anticipated from the appearance of the sella. Signs attributable to increased intracranial pressure, mainly erosion of the dorsum sellae, were found in about half of the cases.
Assuntos
Doenças da Hipófise/diagnóstico por imagem , Sela Túrcica , Crânio/diagnóstico por imagem , Adolescente , Adulto , Idoso , Encefalocele/diagnóstico por imagem , Encefalocele/fisiopatologia , Feminino , Humanos , Pressão Intracraniana , Masculino , Pessoa de Meia-Idade , Neoplasias Hipofisárias/diagnóstico por imagem , Radiografia , Sela Túrcica/diagnóstico por imagem , Crânio/patologiaRESUMO
In a selected material of 47 cases of primary intrasellar cisternal herniation, analysis of pneumoencephalographic changes demonstrated the long axis of the anterior part of the third ventricle to point towards the center of the herniation. Transmitted CSF pulsations from the third ventricle probably determine the formation and location of intrasellar herniations. The distribution of air in the subarachnoid space indicated a disturbed CSF circulation in the majority of patients. Visual field defects were unrelated to the slight deformity of the optic nerves observed but rather to a high position of the third ventricle.
Assuntos
Doenças da Hipófise/diagnóstico por imagem , Sela Túrcica , Adolescente , Adulto , Idoso , Criança , Encefalocele/diagnóstico por imagem , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Nervo Óptico/diagnóstico por imagem , PneumoencefalografiaRESUMO
Twenty-six cases of empty sella were studied using computer assisted tomography (CAT). Emphasis was placed on the technical factors controlling the pictures. The diagnosis seems to be feasible in a large number of cases provided movement artifacts are reduced and the angulation, thickness, and level of the cut are carefully chosen.