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Vol. 19. Issue 4.
Pages 361-364 (January 2008)
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Vol. 19. Issue 4.
Pages 361-364 (January 2008)
Resolución espontánea de quiste aracnoideo intracraneal asintomático
Spontaneous resolution of an asymptomatic intracranial arachnoid cyst
R. Serramito-García, A. García-Allut
Departamento de Cirugía. Facultad de Medicina. Universidad de Santiago de Compostela
M. Gelabert-González*,
* Instituto Universitario de Ciencias Neurológicas “Pedro Barrié de la Maza”
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Resumen

Los quistes aracnoideos son lesiones benignas, de origen congénito y de localización extraparenquimatosa, que con frecuencia se diagnostican de forma incidental en niños y adultos. Su etiología e historia natural no están perfectamente establecidas en la actualidad. La introducción de la tomografía computarizada y resonancia magnética han condicionado un incremento en el número de casos diagnosticados, muchos de ellos de forma incidental. En la literatura existen algunas referencias sobre la desaparición espontánea de quistes aracnoideos intracraneales.

Presentamos el caso clínico de un quiste aracnoideo silviano que se redujo progresivamente hasta su resolución a lo largo de un período de 13 años. Revisamos los casos publicados previamente y analizamos los posibles mecanismos causante de su resolución espontánea.

Palabras clave:
Fosa craneal media
Quiste aracnoideo
Resonancia magnética
Resolución espontánea
Summary

Arachnoid cysts are commonly considered to be benign, congenial, extraparenchymatous anomalies. Small cyst are common incidental findings in children and adults. The aetiology and natural history of arachnoid cysts are not fully understood. In most cases, the presence of the cysts is detected on CT-scans or MRI performed for other reasons. In the literature, there have been few documented cases of arachnoid cysts with spontaneous regression. We reports the case of a silvian arachnoid cyst, which disappeared spontaneously during the 13-year-follow-up period. We review the cases previously reported and the mechanisms underlying the resolution of the arachnoid cysts are discussed.

Key words:
Arachnoid cysts
Magnetic resonance imaging
Middle fossa
Spontaneous disappearance

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