Multi–Detector-Row Computed Tomography Imaging of Variant Skull Base Foramina

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Several inconstant skull base foramina can be observed on multi–detector-row computed tomographic studies. These include the meningo-orbital foramen, foramen of Vesalius, canaliculus innominatus, palatovaginal canal, persistent craniopharyngeal canal, transsphenoidal canal, canalis basilaris medianus, and fossa navicularis. Although many of these foramina are simply incidental findings, there may be associated anomalies and important clinical implications. The multi–detector-row computed tomographic features of variant skull base foramina are depicted and discussed in this article.

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