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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No analysis of the shapes of the foramina was made except to note the occurrence of a bony septum between the occipital and petrous bones unilaterally in 17 On ds basis of our anatomic studies and giving necessary consideration to the roentgenographic magnification, generalized enlargement of the jugular foramen without erosion of the contours is probably of pathologic significance only if the sum of its length, width of the pars vascularis, and width of the pars nervosa is 20 mm.
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Discussion The clinical findings of several different lesions in the region of the jugular foramen may be indistinguishable. Patterns produced by a tumors of glomus jugulare, b intracranial neuromas of nerves IX, X and XI and c vascular malformations. Since this paper was submitted for publication it has come to our attention that two techniques for the demonstration of the jugular foramina one symmetrical bilateral and one oblique unilateral, both combined with stereoscopy were developed and used by W.
In 4 cases, the jugular foramen is demonstrated with special views. In 1 of our cases in which a glomus tumor was highly suspected by the referring craniennfs, sclerosis of the mastoid was present. Aubaniac 3 Exocranial.
These two techniques were reported Davis, D. Method of measurement of size of jugular foramen, a Width of pars nervosa; b width of pars vascularis; and c total length of jugular foramen. Though neither jugular foramen is visualized optimally by this method, a comparison of both foramina on the same film is made possible.
Solid black wedge in b represents widening ees petro-occipital fissure. It is of note that the nerve of origin frequently is difficult to determine at operation.
Angle tumor by pneumoenceph alography. The significant clinical and roentgenographic findings in the 19 cases reported in the world literature are summarized in Table 6.
Both internal acoustic meatuses enlarged. Cerebellum and brain stem in situ and tympanic area stippled on left. Routine, Special views for J. This enlargement of the jugular foramen is secondary to a marked dilatation of the lateral sinus and jugular 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. 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.
Enlargement of the jugular foramen, on the other 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. Addendum Since this paper was submitted for publication it has come to our attention that two techniques for the demonstration of the jugular foramina one symmetrical bilateral and one oblique unilateral, both combined with stereoscopy were developed and used by W.
Vascular Pathology Though not reported previously, pathologic enlargement of the jugular foramen may occur in vascular malformations.
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.
Frugoni, University of Padua, Italy. IX Revilla 58 [Case 1] 54 F? Exocranial 80 42 7 Endocranial 70 39 26 5. Cerebral angiography may aid further in this differential diagnosis.
12 paires de nerfs crâniens Flashcards Preview
Smooth, well-outlined enlargement of jugular foramen in case of neuroma of nerve X. Relation of jugular foramina to epileptic seizures and hydrocephalus.
In these cases, the pars vascularis is increased in size with smooth well-outlined margins, while the pars nervosa is of normal shape and dimensions. The roentgenray reproductions available in 2 of these cases showed the typical features that we have observed in other neuromas of nerves IX, Carniennes and XL.
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Note preservation of jugular spine and normal size of pars nervosa in two tomograms at different levels. Neurology, pires The radiographic projections for the demonstration of the jugular foramen are reviewed. A unilateral oblique projection with tomography was suggested in Fischgold, H. Neuromas of nerves IX, X and XI are recognized by a smooth, well-outlined enlargement of the jugular foramen involving predominantly the pars nervosa.
Signs of increased intracranial pressure. Roentgenological Considerations A large number of special projections have been suggested, especially in the French and Italian literature, for the detailed study of the jugular foramen.
Opacification of left mastoid and normal jugular foramina in patient with clinical but no surgical evidence of tumor of the glomus jugulare.
Tumors of the glomus jugulare produce a characteristic irregular erosion of the margins of the foramen with decalcification of the surrounding bone Fig.
In our experience, symmetrical bilateral projections combined with tomography represent craiennes useful compromise. This enlargement is particularly noticeable in the medial pairee of the foramen and widening of the petro-occipital fissure may be seen even on the conventional submentovertex view Fig. Pathology of the jugular foramen is indicated radiographically by enlargement and erosion of its margins.