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Vol. 8. Issue 3.
Pages 237 (January 1997)
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Vol. 8. Issue 3.
Pages 237 (January 1997)
Quiste del ventrículo terminal sintomático: ¿una lesión aislada o asociada a la siringomielia?
Cyst of the ventriculus terminalis. Isolated lesion or syringomyelia-related?
J.F. Paz Solís, M.J. Herguido, J.M. Roda
Servicio de Neurocirugía. Hospital La paz
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Resumen

El ventrículo terminal es una formación quística, que aparece en el extremo distal del cono medular.

Se presenta el caso de una paciente con una clínica de parestesias en miembros inferiores, junto con calambres y con un examen neurológico que demostraba afectación de vías largas y signos de compresión radicular. La Resonancia Magnética (RM) mostró una lesión quística en el cono medular que no se modificaba tras la inyección de contraste. Mediante una laminectomía dorsal se realizó apertura de un proceso quístico, a tensión, lo cual dió lugar a una mejoría de la clínica presentada inicialmente. Se analizan las características del ventrículo terminal, así como su relación o no con la siringomielia.

Concluimos realzando la importancia de la R.M. para el diagnóstico diferencial con otros procesos quísticos que asientan en la región.

Palabras Clave:
Siringomielia
Cono medular
Ventrículo terminal
Filum terminale
Summary

Ventriculus terminalis is formed by a cystic distension of the central canal in the lower end of the conus medullaris.

This patient presented with symptoms of spinal cord and radicular compression at the lumbo-thoracic junction. Magnetic resonance imaging showed a cystic lesion at the conus medullaris, and neither the cyst nor its wall enhanced after contrast administration. Thoracic laminectomy revealed a distended cyst whose colourless liquid content was aspirated, after which the patient's clinical condition improved. The characteristics of ventriculus terminalis cysts and their relation with syringomyelic lesions are discussed.

We conclude emphasizing the role of magnetic resonance imaging in the differential diagnosis of this entity with other cystic lesions in the thoraco-lumbar region.

Key Words:
Syringomyelia
Conus medullaris
Ventriculus terminalis
Filum terminale

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