• posterior fossa
  • It is separated from the posterior fossa by the clivus and the petrous crest. (wikipedia.org)
  • The success rate is comparable with that of Hopf et al, have reported a significant experience in 17 cases of ETV in severe hydrocephalus secondary to posterior fossa tumor, with a 76% success rate in controlling hydrocephalus9. (thefreedictionary.com)
  • The craniometric linear dimensions of the posterior fossa have been relatively well studied, but angular craniometry has been poorly studied and may reveal differences in the several types of craniocervical junction malformation. (springer.com)
  • Patients with CM were those with symptomatic cerebellar tonsil herniation and/or posterior fossa structures and cisterna magna compressions. (springer.com)
  • Nasal
  • This artery supplies the posterior ethmoidal air sinuses, dura mater of the anterior cranial fossa, and the upper part of the nasal mucosa of the nasal septum. (wikipedia.org)
  • MR images obtained before and after intravenous administration of contrast material showed diffuse thickening and enhancement of the mucosa in the nasal cavities and in the maxillary, ethmoidal, and sphenoidal sinuses as well as abnormal tissue in the pterygopalatine fossa ( Fig 1D-F ). The residual lumen of the maxillary and sphenoidal sinus was filled with fluid. (ajnr.org)
  • Pterygopalatine
  • CT scans showed postsurgical changes and abnormal soft tissue in the maxillary sinuses, in the residual ethmoidal cavities, in the sphenoidal sinus, and in the pterygopalatine fossae bilaterally. (ajnr.org)
  • D, Contrast-enhanced axial T1-weighted MR image (700/12/6 [TR/TE/excitations]) through the base of the skull, obtained with a fat-saturation technique, shows abnormal enhancing tissue in the right and left upper pterygopalatine fossae ( black asterisks ). (ajnr.org)
  • On the left, perineural infiltration involved the pterygopalatine fossa, vidian nerve, and maxillary nerve, up to the gasserian ganglion. (ajnr.org)
  • On the right, the pterygopalatine fossa and, to a lesser extent than on the left, the vidian nerve appeared involved, but not the maxillary nerve. (ajnr.org)
  • sinuses
  • The skull is made up of a number of fused flat bones, and contains many foramina, fossae, processes, and several cavities or sinuses. (wikipedia.org)
  • Also visible in the posterior cranial fossa are depressions caused by the venous sinuses returning blood from the brain to the venous circulation: Right and left transverse sinuses which meet at the confluence of sinuses (marked by the internal occipital protuberance). (wikipedia.org)
  • Other areas more susceptible to fractures are the cribriform plate, the roof of orbits in the anterior cranial fossa, and the areas between the mastoid and dural sinuses in the posterior cranial fossa. (wikipedia.org)
  • It surrounds and supports the dural sinuses (also called dural venous sinuses, cerebral sinuses, or cranial sinuses) and carries blood from the brain toward the heart. (wikipedia.org)
  • coronal
  • Anterior plagiocephaly is a clinical description of unilateral coronal synostosis. (wikipedia.org)
  • C, Coronal CT scan more anterior than A and B shows widening and erosion of both infraorbital canals ( asterisks ). (ajnr.org)
  • F, Contrast-enhanced coronal T1-weighted MR image (700/12/6) through the anterior part of the maxillary sinus shows enlargement and enhancement of both infraorbital nerves ( asterisks ). (ajnr.org)
  • foramina
  • This area of the cranial floor is weakened further by the presence of multiple foramina as a result this section is at higher risk for basilar skull fractures to occur. (wikipedia.org)
  • sinonasal
  • Areview of his original computed tomography (CT) scan (figure) revealed the presence of a large, destructive lesion that involved the sinonasal area and extended into the anterior cranial fossa , a significant degree of associated vasogenic edema in the adjacent frontal lobes of the brain, and signs of hemorrhage. (thefreedictionary.com)
  • clivus
  • Angular craniometries were studied using primary cranial angles (basal and Boogard's) and secondary craniocervical angles (clivus canal and cervical spine lordosis). (springer.com)
  • arising from the ophthalmic
  • The supraorbital nerve is a branch of the frontal nerve arising from the ophthalmic division of the trigeminal nerve (cranial nerve V). The foramen sits on the inmost, lower margin of a grove splitting the supraorbital ridge into a central and two distal sections. (wikipedia.org)