Results 1 to 10 of about 14,361 (211)

Giant Petrous Bone Cholesteatoma: Combined Microscopic Surgery and an Adjuvant Endoscopic Approach [PDF]

open access: yesJournal of Neurological Surgery Reports, 2016
Petrous bone cholesteatomas (PBCs) are epidermoid cysts, which have developed in the petrous portion of the temporal bone and may be congenital or acquired.
Giannicola Iannella   +4 more
doaj   +5 more sources

The petrous bone contains high concentrations of osteocytes: One possible reason why ancient DNA is better preserved in this bone. [PDF]

open access: yesPLoS ONE, 2022
The characterization of ancient DNA in fossil bones is providing invaluable information on the genetics of past human and other animal populations. These studies have been aided enormously by the discovery that ancient DNA is relatively well preserved in
Jamal Ibrahim   +5 more
doaj   +2 more sources

Subtotal Petrosectomy With Preservation of Chorda Tympani for Petrous Bone Cholesteatoma: Case Report

open access: yesEar, Nose & Throat Journal, 2022
A petrous bone cholesteatoma (PBC) is a rare epidermoid cyst of the petrous portion of the temporal bone. The main treatment is subtotal petrosectomy (SP), which generally involves sacrificing the chorda tympani.
Yusuke Takata MD, PhD   +4 more
doaj   +2 more sources

Comparing Ancient DNA Preservation in Petrous Bone and Tooth Cementum. [PDF]

open access: yesPLoS ONE, 2017
Large-scale genomic analyses of ancient human populations have become feasible partly due to refined sampling methods. The inner part of petrous bones and the cementum layer in teeth roots are currently recognized as the best substrates for such research.
Henrik B Hansen   +6 more
doaj   +2 more sources

Anatomical and morphological study of the petrous bone in camels (Camelus dromedarius) [PDF]

open access: yesIraqi Journal of Veterinary Sciences, 2023
The present study presents a detailed anatomical description of the petrous bone of the camel skull. The petrous temporal bone in camels has a distinctive shape. Not all parts were visible.
Gamal M. Allouch   +2 more
doaj   +1 more source

Petrous Bone Cholesteatoma [PDF]

open access: yesSkull Base, 1993
Petrous bone cholesteatoma is a rare pathologic entity and may be a difficult surgical challenge because of potential involvement of the facial nerve, carotid artery, dura mater, otic capsule, and risk of cerebrospinal fluid leak. The objective of this article is to present a personal classification of petrous bone cholesteatomas, a survey of recent ...
M, Sanna   +6 more
openaire   +2 more sources

Petroclival Clinoidal Folds and Arachnoidal Membranes of the Anteromedial Incisural Space: Clinical Anatomy for Neuro Critical Care

open access: yesDiagnostics, 2023
A systematic and narrative literature review was performed, focusing attention on the anatomy of the area located at the junction of the sphenoid and the basal portion of the temporal bone (petrous bone, petrous apex, upper petro-clival region) encircled
Lorenzo Pescatori   +12 more
doaj   +1 more source

Case Report: Diagnosis of Petrous Apex IgG4-Related Disease by Middle Cranial Fossa Craniotomy and Temporal Bone Biopsy

open access: yesFrontiers in Neurology, 2022
IntroductionPrimary IgG4-related disease (IgG4-RD) of the temporal bone is a rare condition. Unlike typical petrous apicitis or Gradenigo syndrome, our patient presented exclusively with unilateral cranial nerve VI palsy and symptoms of diplopia.
Louis Hofmeyr   +7 more
doaj   +1 more source

Optimal Ancient DNA Yields from the Inner Ear Part of the Human Petrous Bone. [PDF]

open access: yesPLoS ONE, 2015
The invention and development of next or second generation sequencing methods has resulted in a dramatic transformation of ancient DNA research and allowed shotgun sequencing of entire genomes from fossil specimens. However, although there are exceptions,
Ron Pinhasi   +18 more
doaj   +1 more source

Morphological Variations and Laterality of Bony Projections on Cerebral Aspect of Petrous Temporal Bone: Its Anatomical and Surgical Relevance [PDF]

open access: yesInternational Journal of Anatomy Radiology and Surgery, 2021
Introduction: Knowledge regarding projections on cerebral aspect of petrous temporal bone especially in relation to dural venous sinuses or at the site of dural attachments is required for evaluating and differentiating normal from abnormal.
Sachin Patil   +2 more
doaj   +1 more source

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