Summary
Chemodectomas of the temporal bone usually derive their blood supply from branches of the external carotid artery. The authors report five patients in whom chemodectomas were supplied, in part, by branches of the internal carotid artery. One of these branches, the caroticotympanic artery, normally courses to the region of the middle ear. Chemodectomas that arise in the middle ear may therefore be fed partially or, on occasion, primarily by the caroticotympanic artery. For this reason selective injection of the internal carotid artery should be made in addition to selective injection of the external carotid artery in the evaluation of such tumors.
Résumé
Les chémodectomes de l'os temporal sont habituellement vascularisés par les branches de l'artére carotide externe. Les auteurs rapportent cinq cas de chémodectomes partiellement vascularisés par des branches de l'artére carotide interne. L'une de ces branches, l'artére caroticotympanique, rejoint normalement l'oreille moyenne, de sorte qu'elle participe à, ou assure la vascularisation des chémodectomes de l'oreille moyenne. C'est pour cette raison qu'il faut procéder à l'angiographie sélective de l'artére carotide interne d'une part et de l'artére carotide externe d'autre part.
Zusammenfassung
Chemodectome der Temporalregion erhalten ihre Blutzufuhr von Ästen der A. carotis ext. Die Autoren berichten über 5 Patienten, in denen die Chemodectome teilweise auch durch Äste der A. carotis int. versorgt wurden. Einer dieser Äste, die Carotico-Tympani-Arterie verläuft normalerweise zum Ohr. Chemodectome, die diese Region erreichen, können also teilweise oder primär durch diese Arterie versorgt werden. Aus diesent Gründen sollte neben einer selektiven Angiographie der A. carotis ext. auch eine selektive Arteriographie der A. carotis int. durchgeführt werden.
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Jordan, C.E., Newton, T.H. Internal carotid artery supply to temporal bone chemodectomas. Neuroradiology 8, 253–257 (1975). https://doi.org/10.1007/BF00335019
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DOI: https://doi.org/10.1007/BF00335019