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Vol. 11. Issue 4.
Pages 271-280 (January 2000)
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Vol. 11. Issue 4.
Pages 271-280 (January 2000)
Embolización de MAVs intracraneales coadyuvante de cirugía o radiocirugía
A. Lagares, R.D. Lobato, P.A. Gómez, P. González, A. de la Lama
Servicio de Neurocirugía. Hospital “12 de Octubre”, Madrid
J. Campollo*, A. Ramos*
* Section de Neurorradiología, Hospital “12 de Octubre”, Madrid
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Abstract
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Objetivos

La embolización de malformaciones arteriovenosas (MAVs) se ha mostrado como una técnica efectiva coadyuvante del tratamiento quirúrgico o radioquirúrgico. El objetivo de este trabajo es analizar la técnica, efectividad y complicaciones de la embolización terapéutica en una serie de pacientes con MAV intracraneal que posteriormente fueron sometidos a cirugía convencional o radioterapia estereotáxica.

Material y métodos

Se consideran 17 pacientes consecutivos tratados con embolización por vía endovascular extraídos de una serie de 212 portadores de MAV intracraneal admitidos entre 1975 y 1999. La embolización se llevó a cabo utilizando NBCA (hystoacril) o PVA (polivinil-alcohol) como material embolizante. Se realizaron estudios angiográficos pre y postembolización para determinar el grado de reducción del tamaño del nidus. Asimismo, se comparó la dificultad del tratamiento quirúrgico postembolización frente a casos similares operados sin embolización previa.

Resultados

se embolizaron una media de 1,4 pedículos vasculares por sesión en 27 sesiones, con una media de 2,2 pedículos vasculares por paciente. El porcentaje de disminución del tamaño del nidus osciló entre el 20 y el 100% (media 74%). La embolización facilitó el tratamiento microquirúrgico o radioquirúrgico posterior. Dos enfermos presentaron un déficit neurológico menor (11,7%) y un enfermo un déficit neurológico severo tras la embolización. La mayor parte de los casos presentó una buena evolución final.

Conclusiones

La embolización de las MAVs intracraneales es un procedimiento terapéutico coadyuvante que facilita el posterior tratamiento quirúrgico o radioquirúrgico de estas lesiones.

Palabras clave:
Malfonnación arteriovenosa cerebral
Embolización
NBCA
Cirugía
Rradiocirugía
Summary
Objective

the embolization of brain arteriovenous malformations (AVMs) has shown to be a very effective adjuvant technique before surgical or radiosurgical therapy. The purpose of this work is to analyse the technique, effectiveness and complications of therapeutic embolization of brain AVMs in a series of patients who were subsequently treated by surgery or stereotactic radiosurgery.

Materials and methods

A series of 17 consecutive patients treated with endovascular embolization are considered. These were extracted from a series of 212 patients with brain AVMs admitted between 1975 and 1999. NBCA (hystoacryl) or PVA (polyvinyl-alcohol) were used as embolization materials. Pre and postembolization angiographic studies were done in order to assess the reduction of the nidus. Postembolization microsurgical technical difficulty was also compared against other similar cases operated without previous embolization.

Results

On average 1,4 arterial feeders were embolized per session in a total of 27 sessions, with an average of 2,2 feeders embolized per patient. Nidus size reduction ranged from 20 to 100% (average 74%). Embolization favoured the following surgical or radiosurgical treatment. Two patients suffered minor neurological deficits (11,7%) and one developed a major deficit after embolization. The majority of the patients presented made a good recovery.

Conclusions

Embolization of brain AVMs is an adjuvant therapeutic procedure that facilitates the posterior surgical or radiosurgical treatment of these lesions.

Keywords:
Brain arteriovenous malformations
Embolization
NBCA
Surgery
Radiosurgery

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