petrous


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petrous

 [pet´rus]
resembling rock or stone; stony.

pet·rous

(pet'rŭs, pē'trŭs),
1. Of stony hardness.
2. Synonym(s): petrosal
[L. petrosus, fr. petra, a rock]

petrous

/pet·rous/ (pet´rus) resembling a rock; hard; stony.

petrous

(pĕt′rəs)
adj.
1. Of, relating to, or resembling rock, especially in hardness; stony.
2. Of or relating to the very dense, hard portion of the temporal bone that forms a protective case for the inner ear.

petrous

[pet′rəs]
Etymology: L, petra, rock
resembling a rock or stone.

pet·rous

(pet'rŭs)
1. Of stony hardness.
2. Synonym(s): petrosal.
[L. petrosus, fr. petra, a rock]

petrous

resembling rock or stone; stony.

petrous bone
the pars petrosa, or petrous portion of the temporal bone. See also Table 10.
References in periodicals archive ?
CT and MRI scans are useful in identifying the lesions around the petrous apex which can differentiate the other possible diagnosis, also tells about the mastoid pneumatisation.
Systematic obliteration of the ET when the petrous apex pneumatization level was at least 2/4 significantly reduced the incidence of rhinoliquorrhea [22].
The cerebral vascularity can be preserved with a high flow interpositional bypass using petrous to supraclinoid ICA bypass, superficial temporal artery to middle cerebral artery bypass, superficial temporal artery to middle cerebral artery bypass with saphenous graft, superficial temporal artery to superior cerebellar artery bypass, long saphenous bypass, in situ bypass or primary reanastomosis.
T2W images in coronal plane (A and B) showing mild enlargement of the left mastoid cells and discrete elevation of the left petrous ridge (arrows in A).
hemiparesis, uMN sign+, Learning disability Case Laterality CT scan of head MRI (additional findings) 1 left Cerebral atrophy, Prominent left prominent sulci, frontal sinus, prominent cerebral peduncle ventricle midline hypoplasia, and shift, bony elevation of left thickening petrous ridge 2 left Cerebral atrophy, NA prominent ventricle, widening of sulci and Sylvian fissure, bony thickening 3 Left Cerebral atrophy, Gliosis in left prominent parietal-occipital ventricle widening cortex, shifting of of sulci and falx towards the Sylvian fissure, same side adjacent thickened calvarium rt: right; UMN: upper motor neuron; MR: mental retardation; NA: not available; GTC: generalized tonic-clonic; CT: computed tomography; MRI: magnetic resonance imaging.
Maria Petrou, 21, was tormented by bullies because of her "geeky" appearance and her passion for learning.
Magnetic resonance imaging (MRI) of the brain with contrast detected a contrast-enhancing lesion in the right CS and petrous apex [Figure 1].
Neurotologists, otolaryngologists, and skull base surgeons from the US outline a practical approach to the clinical management of skull base tumors and lesions, beginning with surgical approaches described from the neurotologist's and neurosurgeon's perspectives, then minimally invasive and endoscopic skull base approaches; specific tumors and approaches, including acoustic neuroma, meningioma, neurofibromatosis, petrous apex lesions, and petroclival tumors; temporal bone malignancies; unusual temporal bone lesions, such as Paget's disease, fibrous dysplasia, and osteopetrosis; stereotactic radiotherapy for various types of skull base pathology; and the importance, benefit, and interpretation of intraoperative monitoring.
The anatomical osseous landmarks at this level were the petrous apex with the carotid canal, the jugular foramen, the foramen lacerum, the sphenopetrosal fissure or suture, and the root of the pterygoid process.
It's a very rare complication of otitis media caused by the infection of the petrous apex.
Initially named in the complaint were Balasabas, Nosidal, Vistan, PO3 Michael Pornilos, SPO1 Renato Gregorio, PO2 Josepino Callora, PO2 Rolando Ladres, PO2 Dennis Tablizo, PO2 Petrous Ryan Malacad, PO2 Laurence Sagum and PO1 Journey Joy Asayo.
Other extracranial complications include Bezold's abscess, labyrinthine fistulae, facial nerve paralysis and petrous apicitis (Gradenigo's syndrome).