petrous


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petrous

[′pe·trəs]
(materials)
Referring to a material whose hardness resembles that of stone.
References in periodicals archive ?
Gradenigo's syndrome, also called Gradenigo-Lannois syndrome and petrous apicitis, is a complication of otitis media and mastoiditis involving the apex of the petrous temporal bone.
CSF leaks results from a communication way that takes place between the subarachnoid space, the mastoid air cells, the middle ear, the petrous apex air cells, and finally either the Eustachian tube (ET), the surgical incision, or a tear in the tympanic membrane [7-10, 12-17].
His contrast enhanced MRI brain showed acute haemorrhage in the middle ear and the mastoid with aneurysmal dilation of the petrous part of the ICA.
Therefore, the frontal sinus, ethmoid and mastoid cells equilateral to brain hemiatrophy get larger, the squama of the frontal bone becomes thicker and large sphenoid wing and petrous ridge elevate.
Elevation of the petrous ridge, sphenoid wing and orbital roof, hypoplasia of the anterior or middle cranial fossa, and shifting of the midline structures towards the atrophic hemisphere may be noted.
A high index of suspicion needs to be taken in patients with petrous bone fracture for probable vein of Labbe hemorrhagic infarction following transverse sinus thrombosis.
Maria aged 12 (left) with mum and dad |Petrous and Yiola Petrou and sister Lisa at the family fish and chip shop.
Causes can include inflammation of the middle ear or petrous temporal bone, a dense pyramid-shaped bone at the base the skull, post-surgical complications or trauma.
Magnetic resonance imaging of the brain with contrast detected a contrast-enhancing lesion in the right cavernous sinus (CS) and petrous apex.
Several cases of giant cell tumors involving jaw bones, skull, and petrous temporal and sphenoid bones are reported1, 2.
Three additional cases of otitis media with petrous apex and cranial base involvement were subsequently reported by Farr et al (6) in 1992, Weingarten et al (7) in 1993, and Blackledge et al (8) in 2001.
At the instant I am ready to go in, I advise my nurse who is holding the child's head, then I puncture the TM in the inferior anterior quadrant, making sure the bevel of the needle goes all the way through the TM, but not too far so I don't hit the petrous bone on the other side of the middle ear space.