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Congenital thoracic extradural cysts

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Summary

Two thoracic extradural cysts are described which occurred in the same patient. It is suggested that the origin of the cysts may be different, one arising as a developmental abnormality of durai reduplication and the other as a diverticulum of one or both membranes or by the prolapse of arachnoid through a congenital defect in the durai sheath of a nerve root.

Zusammenfassung

Es werden zwei thoracale, extradurale Cysten beschrieben, die gleichzeitig bei einem Patienten vorkamen. Wahrscheinlich haben beide Cysten verschiedene Ursachen, wobei eine als Entwicklungsstörung mit Verdoppelung der Dura gedeutet werden könnte, während die andere eine Ausstülpung (Divertikel) einer oder beider Membranen oder ein Prolaps von Arachnoidea durch einen angeborenen Defekt der Durascheide einer Nervenwurzel sein könnte.

Résumé

Description de deux kystes extra-duraux thoraciques chez le même malade. On suggère que l'origine de ces kystes peut être différente, l'un venant d'une anomalie de développement dans le dédoublement de la dure-mère, l'autre apparaissant comme un diverticule d'une ou des deux membranes, ou par le fait d'une hernie de l'arachnoïde à travers une brèche congénitale de la gaine durale d'une racine nerveuse.

Riassunto

Vengono descritte due cisti toraciche extradurali presenti nello stesso paziente. Viene suggerita l'ipotesi di una diversa origine delie due cisti: una potrebbe essere considerata come una anomalia di sviluppo della duplicazione durale e l'altra come un diverticolo di una o di ambedue le membrane oppure come un prolasso dell'aracnoide attraverso un difetto congenito nella guaiana durale di una radice.

Resumen

Se describen dos quistes torácicos extradurales que se presentaron a la vez en un paciente. Probablemente ambos quistes tienen distintas causas, de tal forma que uno de ellos puede ser aceptado como un trastorno del desarrollo con desdoblamiento de la duramadre, mientras que el otro podria ser un diverticulo en una o en ambas membrabas, o un prolapso de la aracnoides por un defecto congenito del tabique durai de una raiz nerviosa.

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Strang, R.R., Tovi, D. Congenital thoracic extradural cysts. Acta neurochir 9, 433–439 (1961). https://doi.org/10.1007/BF01809538

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  • DOI: https://doi.org/10.1007/BF01809538

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