RESUMEN
We report on a 48 years-old man with basilar impression without syringohydromyelia, in which the cisterna magna was impacted by the cerebellar tonsils. Six months after posterior fossa decompression there was the disappearance of nuchal rigidity, vertigo, spastic paraparesis and improvement of balance. Nevertheless hyperreflexia and diminished pallesthesia of the lower limbs persisted.
O presente relato descreve um homem de 48 anos com impressão basilar, sem siringo-hidromielia, no qual a cisterna magna se achava impactada pelas tonsilas cerebelares. O quadro clínico era caracterizado, especialmente, por paraparesia espástica. Seis meses após a descompressão da fossa posterior houve regressão da rigidez de nuca, vertigem, paraparesia espástica inicialmente observadas e melhora do equilíbrio. A hiperreflexia e a hipopalestesia persistiram nos membros inferiores.
Asunto(s)
Humanos , Masculino , Persona de Mediana Edad , Malformación de Arnold-Chiari/diagnóstico , Cisterna Magna , Paraparesia Espástica/diagnóstico , Platibasia/diagnóstico , Malformación de Arnold-Chiari/complicaciones , Malformación de Arnold-Chiari/cirugía , Descompresión Quirúrgica , Imagen por Resonancia Magnética , Paraparesia Espástica/etiología , Paraparesia Espástica/cirugía , Platibasia/complicaciones , Platibasia/cirugíaRESUMEN
We describe a rare case of a 30 year-old woman with intense vertiginous sensation, lack of body balance and a tendency to fall backwards, making it necessary for two people to sustain her. The magnetic resonance imaging of the craniocervical junction evidenced tonsilar herniation at the inferior level of C1, and during the operation performed in sitting position, we observed crowding of the cerebellar tonsils at the level of C3. After the osteo-dural-neural decompression, the symptomatology remitted on the same day of the operation.
