Summary
Vertebral angiograms in 30 surgically proven acoustic neurinomas are reviewed and arterial and venous abnormalities are analyzed in detail. Previously described angiographic abnormalities are confirmed including displacement and non-visualization of the anterior inferior cerebellar artery and the petrosal veins. In addition arched displacement of the superior cerebellar artery and the marginal artery is emphasized as an important finding in these tumours. Description is given of an abnormal vein which is enlarged and displaced posteriorly in an arcuate fashion over the mass. This unnamed abnormal vein offers one of the most important findings in the diagnosis of acoustic neurinomas. It is concluded that acoustic neurinomas of more than 2.0 cm in diameter can be diagnosed accurately by vertebral angiography and important additional information for surgical removal can be obtained.
Résumé
L'auteur étudie les anomalies artérielles et veineuses dans 30 angiographies vertébrales de neurinomes de l'acoustique vérifiées chirurgicalement.
Les anomalies angiographiques décrites préalablement sont confirmées, en particulier le déplacement et la nonvisualisation de l'artère cérébelleuse antéro-inférieure et des veines pétreuses. On relève en particulier le déplacement concave de l'artère cérébelleuse supérieure et la dilatation de l'artère marginale (artère bordante) dans le cas de ces tumeurs. L'auteur décrit une veine anormale qui est dilatée et refoulée vers l'arrière, entourant la masse. La mise en évidence de cette veine anormale inominée est très importante pour poser le diagnostic de neurinome de l'acoustique. On sait que des neurinomes de l'acoustique de plus de 2 cm de diamètre peuvent être démontrés de façon précise par l'angiographie vertébrale. Celle-ci donne également des informations très précieuses aux neuro-chirurgiens.
Zusammenfassung
Die Vertebralis-Angiogramme von 30 Patienten mit Acusticus-Neurinomen wurden ausgewertet. In der vorliegenden Arbeit wird über die arteriellen und venösen Veränderungen im Detail berichtet. Besonders wird darauf hingewiesen, daß eine Verlagerung der A. cerebelli superior und der A. maginalis als wichtiges Zeichen für diese Tumoren anzusehen ist. Ferner findet sich eine abnormale Vene, die über dem Tumor liegt. Acusticus-Neurinome, die mehr als 2cm Durchmesser aufweisen, können mit der Vertebralis-Angiographie exakt bestimmt werden.
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Takahashi, M., Okudera, T., Tomanaga, M. et al. Angiographic diagnosis of acoustic neurinomas: Analysis of 30 lesions. Neuroradiology 2, 191–200 (1971). https://doi.org/10.1007/BF00337566
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DOI: https://doi.org/10.1007/BF00337566