El crecimiento de un aneurisma intracraneal a lo largo de meses o años ha sido demostrado angiográficamente con anterioridad, siendo muy pocos los casos documentados de crecimiento en días en pacientes sin cirugía previa. Presentamos un caso de crecimiento rápido de un aneurisma de la arteria cerebelosa posteroinferior desde un tamaño de 3mm a 19mm en un plazo de 25 días en una paciente no intervenida anteriormente. Se exponen las diversas teorías y factores que intervienen en la formación, crecimiento y ruptura de aneurismas y se discute la posible patogenia de nuestro caso en base al estudio histopatológico.
The growth period of intracranial aneurysms reportedly varies from several months to years. Those growing in only days are extremely rare, especially if they have not been operated upon. We report arare case of rapidly growing aneurysm of the posterior inferior cerebellar artery that enlarged from 3mm to 19mm in 25 days in a patient without-previous surgery. We review the different theories and factors that contribute to formation, enlargement and rupture of aneurysms and discuss the pathogenesis in our case based on the pathological findings.
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