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The radiology of epidermoid tumors of the cerebellopontine angle

La radiologie des tumeurs épidermoïdes de l'angle pontocérebelleux

Die Röntgendiagnostik von Epidermoiden des Kleinhirnbrückenwinkels

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Summary

Angiographic, pneumoencephalographic and iophendylate cisternographic features of three recently investigated primary epidermoid tumors of the cerebellopontine angle are presented and the radiology of these lesions is reviewed. Modern neuroradiological techniques, including magnification vertebral angiography with subtraction,and fractional pneumoencephalography with multidirectional laminographic capability, can provide the correct preoperative diagnosis. Combined techniques exclude cerebellopontine angle lesions such as acoustic neuromas, meningiomas, posterior fossa aneurysms and arteriovenous malformations. The appropriate studies fully outline the epidermoid lesions, with their relationship to adjacent neural and vascular structures.

Résumé

Les auteurs rapportent les caractéristiques angiographiques pneumoencéphalographiques et cisternographiques positives de trois cas de tumeurs épidermoïdes de l'angle pontocérébelleux examinés récemment et font la revue de la radiologie de ces lésions. Les techniques neuro-radiologiques modernes comprenant l'agrandissement de l'angiographie vertébrale avec soustraction et l'encéphalographie gazeuse fractionnée avec tomographie multi-directionnelle, fournit un diagnostic pré-opératoire correct. La combinaison de ces techniques permet d'exclure des lésions de l'angle pontocérébelleux tels que neurinomes de l'acoustique, méningiome, anévrysme de la fosse postérieure et malformations artérioveineuses. Les investigations appropriées délimitent entièrement les lésions épidermoïdes, avec leur relation avec les structures nerveuses et vasculaires adjacentes.

Zusammenfassung

Beschreibung von angiographischen, pneumoencephalographischen und Pantopaque-Cisternographie-Befunden von 3 primären Epidermoiden im Kleinhirnbrückenwinkel. Durch die modernen neuroradiologischen Untersuchungsmethoden kann eine korrekte präoperative Diagnose möglich werden. Es können damit raumfordernde Prozesse im Kleinhirnbrückenwinkel-Bereich anderer Genese, wie z.B. Akustikus-Neurinome oder Meningeome, ausgeschlossen werden.

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Supported in part by Grants # 5-T01-NS-05646-02 NSR B & # 1-F11-NS-2591-01 NSR B

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Long, J.M., Kier, E.L. & Schechter, M.M. The radiology of epidermoid tumors of the cerebellopontine angle. Neuroradiology 6, 188–192 (1973). https://doi.org/10.1007/BF00335321

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