Schwannoma do forame magno: revisão e relato de caso

• Autor(a) principal: Nacif, Marcelo Souto
• Data de Publicação: 2005
• Outros Autores: Caiado, Stella, Mello, Ricardo Andrade Fernandes De, Jauregui, Gustavo Federico, Campos, Flávio Do Amaral [UNIFESP], Oliveira, Nidia Di Paula Silva, Paula Neto, Walter Teixeira De, Santos, Alair Augusto Sarmet Moreira Damas Dos
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNIFESP
• Texto Completo: http://dx.doi.org/10.1590/S0100-39842005000100015; http://repositorio.unifesp.br/handle/11600/2409
• topic: Schwannoma; Central nervous system; Foramen magnum; Schwannoma; Sistema nervoso central; Forame magno

The authors report an unusual presentation of a voluminous neck schwannoma in a 53-year-old female that presented with a three-year history of progressive weakness associated with impaired movement of the limbs. Neurological examination revealed postural instability, unstable and paraparetic gait, tetraparesis and dyspnea. A preoperative magnetic resonance imaging of the neck revealed an expansive, extradural, well-circumscribed lesion, with soft-tissue attenuation, at the level of C1-C2 vertebral bodies. During surgery, the tumor was found to be extradural, lateral to the cervical spinal cord, attached to the C1 left nerve root and extending upwards through the foramen magnum. Histopathological analysis of the resected specimen confirmed the diagnosis of schwannoma. The patient showed a favorable outcome with progressive improvement of the symptoms. Magnetic resonance imaging proved to be valuable in the detection and evaluation of the lesion, although the definite diagnosis was achieved only after histopathological studies. We concluded that magnetic resonance imaging for early diagnosis and prompt surgical resection seems to be the best approach to achieve good prognosis.