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Vol. 16. Issue 1.
Pages 63-66 (January 2005)
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Vol. 16. Issue 1.
Pages 63-66 (January 2005)
Paquimeningitis crónica hipertrófica del seno cavernoso simulando meningioma con oclusión completa de la arteria carótida
Idiopathic hypertrophic pachymeningitis of the caver-nous sinus mimicking meningioma and occluding the carotid artery
T. Arrese
, P. González, R.D. Lobato
Servicios de Neurocirugía. Hospital Universitario 12 de Octubre. Madrid
A. Ramos*, J. Ruiz**
* Servicios de Neurorradiología. Hospital Universitario 12 de Octubre. Madrid
** Servicios de Neurología. Hospital Universitario 12 de Octubre. Madrid
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Resumen

La paquimeningitis crónica hipertrófica (PMCH) es una rara entidad inflamatoria caracterizada por la hipertrofia crónica idiopática de la duramadre. La afectación del seno cavernoso, aunque rara, ha sido reportada con mayor frecuencia en los últimos años. Presentamos el caso de una paciente con PMCH que fue inicialmente diagnosticada de meningioma y en la que se evidenció oclusión completa de la arteria carótida intracavernosa

Esta paciente de 42 años fue enviada a nuestro centro con el diagnóstico de meningioma para recibir tratamiento radioquirúrgico. El diagnóstico inicial se basó en la imagen de RM y en la falta de respuesta temporal a los esteroides. Un estudio completo evidenció la naturaleza inflamatoria de la lesión, la cual mejoró tras prolongado tratamiento corticoideo.

El diagnóstico diferencial entre PMCH y meningioma puede ser difícil debido a las similitudes en las pruebas de imagen y a la resistencia temporal a los corticoides que puede presentar la PMCH. Por ello enfatizamos la utilidad del SPECT para diferenciar las entidades tumorales de las inflamatorias. Nuestra paciente presentó además la peculiaridad de mostrar una oclusión completa de la arteria carótida intracavernosa, circunstancia que no hemos encontrado reportada en la literatura.

Palabras clave:
Paquimeningitis crónica hipertrófica
Síndrome de Tolosa-Hunt
Meningioma
Síndrome del seno cavernoso
Keywords:
ANCAs
ANA
ECA
FR
PCR
PMCH
RM
SC
SSC
STH
Summary

Idiopathic hypertrophic pachymeningitis (IHPM) is a rare inflammatory entity characterized by the idiopathic thickening of the dura mater. An increasing number of cases have been reported involving the cavernoss sinus. We present the case of a patient with IHPM who was diagnosed of meningioma and showed a complete occlusion of the intracavernous carotid ailery.

This 42 years old woman was sent to our hospital to be treated radiosurgicaly with the diagnosis of meningioma. The diagnosis was based on MRI findings and on the temporal resistance to corticoid treatment. A complete study of the patient demonstrated the inflam-matoiry nature of the lesion, which improved after long corticosteroid treatment.

The differential diagnosis between meningioma and IHPM may be complex because of the similarities in image findings and the temporal resistance to corticosterods shown by IHPM, thus we emphasize the usefulness of the SPECT to differentiate between inflammation and tumor in this clinical setting. In addition, our patient showed a total occlusion of the intracavernous carotid artery and, as far as we know, this is the first case with such a finding reported in the literature.

Key words:
Idiopathic hypertrophic pachymeningitis
Tolosa-Hunt syndrome
Meningioma
Cavernous sinus syndrome

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