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Vol. 18. Issue 4.
Pages 326-329 (January 2007)
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Vol. 18. Issue 4.
Pages 326-329 (January 2007)
Regresión espontánea de las malformaciones arteriovenosas cerebrales: presentación de un caso y revisión de la literatura
Spontaneous regression of cerebral arteriovenous malformations: case report and review of the literature
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B. Pascual
, A. Lagares, P. Miranda, A. Pérez-Núñez, I. Arrese, R.D. Lobato
Servicios de Neurocirugía, Hospital Universitario 12 de Octubre, Madrid
J. Campollo*
* Servicios de Neurorradiología, Hospital Universitario 12 de Octubre, Madrid
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Resumen

La regresión espontánea de las malformaciones arteriovenosas cerebrales (MAVs) es poco frecuente. Este hecho parece ser más común en aquellas MAVs de pequeño tamaño, cuyo modo de presentación clínica preferente es con hemorragia cerebral, con una única arteria aferente, y una sola vena de drenaje. No se conocen con exactitud cuáles son los factores responsables de la desaparición de las MAVs. La trombosis secundaria al sangrado es el factor más comúnmente asociado a este hecho. Otros posibles factores implicados son la gliosis secundaria a microsangrados repetidos o la oclusión de las arterias aferentes por pequeños émbolos. Se presentan las características clínico radiológicas de un caso de regresión espontánea de MAV y se revisa la literatura al respecto

Palabras clave:
Malformación arteriovenosa
Regresión espontánea
Trombosis
Hemorragia
Summary

Spontaneous regression of intracranial arteriovenous malformations (AVMs) is a rare phenomenon. Such an event is more likely to occur with small AVMs that present with intracranial hemorrhage, which are fed by a unique artey and drained through a single vein. The factors responsible for AVMs regression remain unclear. Thrombosis of the AVM secondary to intracranial hemorrhage ha been the most commonly associated factor. Other possible causes are the gliosis around the clot secondary to repeated frequent microbleedings or occlusion of the feeding arteries by small emboli. We report a new case of spontaneous regression of a AVM and review the literature related to this entity.

Key words:
Arteriovenous malformation
Spontaneous regression
Thrombosis
Hemorrhage

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