This Pin was discovered by Christy Reed. Discover (and save!) your own Pins on Pinterest. 12 paires de nerfs crâniens Flashcards Preview. UE 5 – Anatomie > 12 paires de nerfs crâniens > Flashcards. Study These Flashcards. L’étude anatomique de la vascularisation de la IIIe paire démontre l’existence de la IIIe paire, associée ou non à l’atteinte d’autres nerfs crâniens, suggère un.
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Interpretation of the roentgenograms requires an awareness of the normal variations in the size, shape and symmetry of the jugular foramina. Bilateral enlargement of snatomie vascularis secondary to arteriovenous malformation of both cerebral hemispheres. Revilla 58 [Case 1].
Jugular foramen enlarged and petro-occipital fissure widened in case of neuroma originating from one of three nerves IX, X, XI.
Neuromas of nerves IX, X and XI are recognized by a smooth, well-outlined enlargement of the jugular foramen involving predominantly the pars nervosa. In 4 cases, the jugular foramen is demonstrated with special views. Angle tumor by pneumoencephalography XI. This enlargement is particularly noticeable in the medial dees of the foramen and widening of the petro-occipital fissure may be seen even on the conventional submentovertex view Fig.
Note striking sclerosis of mastoid on pairees of tumor in A.
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Rerilla 58 [Case 3]. The jugular foramen foramen lacerum posterius actually is a canal that courses anteriorly, inferiorly and laterally from an endocranial to an exocranial opening Fig.
In the presence of a paiers of the cerebellopontine angle, the dea evidence of normal internal acoustic meatuses and pathologically enlarged and eroded jugular foramen makes the diagnosis of acoustic neuroma unlikely while suggesting one of the lesions that originate in the jugular foramen.
Other lesions derived from structures contiguous to the jugular foramen have been reported to involve the foramen. This enlargement of the jugular paures is secondary to a marked dilatation of the lateral sinus and dea vein draining these malformations just as lesser variations in size of the normal jugular foramen are determined by differences in size of the lateral sinus.
Though not reported previously, pathologic enlargement of the jugular foramen may occur in vascular malformations. Ledoux-Lebard et al 43 so-called lambda film Dilatation of the internal jugular vein secondary to vascular malformation is reported for the first time as a cause of enlargement of the pars vascularis of the jugular foramen.
Alembic shape of exocranial a and bird-like shape of endocranial opening b. Of these observations, sclerosis of the mastoids unassociated with bony erosion is of doubtful significance in view of its high incidence in the general population.
The previously reported asymmetry of the two foramina, with the right side usually predominating Fig. Asymmetrical jugular foramina as seen endo- above and exocranially below. On the other hand, detailed exocranial and endocranial measurements of the foramen were obtained and in accord with previous workers, we noted a considerable range in the dimensions of the normal foramen Table 1.
Discussion The clinical findings of several different lesions in the region of the jugular foramen may be indistinguishable. Tumor demonstrated by ventriculography.
A unilateral oblique projection with tomography was suggested in Fischgold, H. Radiographic correlation of asymmetrical lateral sinuses in late venous phase of carotid angiography A and jugular foramina in submentovertex view B.
Even with special views Fig. Both dees acoustic meatuses enlarged. Routine, Special views for J. Tumors of the glomus jugulare produce a characteristic irregular erosion of the margins of the foramen with decalcification of the surrounding bone Fig.
Internal acoustic meatus eroded.
Neurosciences/La moelle épinière
Cerebral angiography may aid further in this differential diagnosis. In each of these cases, the involved foramen is enlarged with sharply defined, slightly thickened margins and erosion of the jugular spine Fig. Patterns produced by a tumors of glomus jugulare, b intracranial neuromas of nerves IX, X and XI and c vascular malformations. Routine, Tomography, Special view for J. Frugoni, University of Padua, Italy.
Di Chiro et at. Neurology, These neuromas, which may be found associated with general neurofibromatosis, 22, 53 occasionally originate extradurally, 13, 14, 26 and sometimes extend extracranialy.
Enlargement of pars vascularis of both jugular foramina in case of aneurysm of vein of Galen in year-old boy. From this error in roentgenographic interpretation, an interest developed in the normal anatomy and pathology of the jugular foramen.
File:Anatomie du SN – Wikimedia Commons
Aubaniac 3 Exocranial. Complete bridging of jugular foramen. IX Revilla 58 [Case 1] 54 F? Angle tumor by pneumoenceph alography Small X Bernasconi et al. Enlargement of the jugular foramen, on the dss hand, is a very important finding and is observed in a high percentage of cases of tumors of the glomus jugulare when special projections are used Table 5.
Irregular, ill-defined erosion of jugular foramen in 2 tumors of right glomus jugulare.