Radiological Methods of Investigation of the Petrous Bone and Mastoid Process

1990 ◽  
pp. 1-21
Author(s):  
Peter D. Phelps ◽  
Glyn A. S. Lloyd
Keyword(s):  
Petrous Bone ◽  
Mastoid Process ◽  
Radiological Methods

scholarly journals Severe Daily Headache as an Uncommon Manifestation of Widespread Skull Base Osteomyelitis

2019 ◽  
Vol 11 (2) ◽  
pp. 178-182 ◽  
Author(s):  
Jens van der Valk ◽  
Frank Treurniet ◽  
Jan Pieter Koopman ◽  
Hille Koppen
Keyword(s):  
Skull Base ◽  
Final Diagnosis ◽  
Petrous Bone ◽  
Mastoid Process ◽  
Radiological Investigation ◽  
Skull Base Osteomyelitis ◽  
Positron Emission ◽  
Patients With Diabetes ◽  
Daily Headache ◽  
The Right

Temporal bone osteomyelitis has been recognized for decades as a complication of otitis externa, specifically in elderly patients with diabetes. A much less prevalent form is skull base osteomyelitis. We report a 70-year-old man with diabetes who presented to our outpatient clinic with severe chronic daily complaints of headache. The headache was located frontoparietally and kept him awake at night. Imaging (nonenhanced computed tomography [CT], magnetic resonance imaging, and positron emission tomography/CT) showed a hypermetabolic mass on the right side of the skull base, in the middle ear, and in the mastoid process, with invasion and partial destruction of the surrounding elements of the petrous bone, the occipital bone, and the sphenoid bone on the right, with extension by way of the clivus into the apex of the left petrous bone. Diagnostic puncture revealed Streptococcus pneumoniae.The final diagnosis was severe daily headache due to central skull base osteomyelitis. Our case emphasizes the need for proper clinical and radiological investigation keeping the diagnosis of skull base osteomyelitis in mind with patients with diabetes or otherwise immunocompromised status who present with chronic daily headache and otalgia.

On the transmission of sound generated by an electromagnetic device from the mastoid process to the petrous bone

1991 ◽  
Vol 90 (2) ◽  
pp. 895-903 ◽  
Author(s):  
E. Buchman ◽  
G. Rosenhouse ◽  
A. Shupak ◽  
U. Shimoni
Keyword(s):  
Petrous Bone ◽  
Mastoid Process ◽  
Electromagnetic Device

Primary Cholesteatoma of Petrous Bone: A Case Report

2014 ◽  
Vol 75 (S 02) ◽  
Author(s):  
Insaf Zgolli ◽  
S. Mezri ◽  
I. Kasraoui ◽  
N. Moussa ◽  
K. Akkari ◽  
...  
Keyword(s):  
Case Report ◽  
Petrous Bone

Mechatronical Assistance in the Surgery of Petrous Bone: First Experiences with a Navigation-Controlled Drill

Skull Base ◽  
2007 ◽  
Vol 16 (S 1) ◽  
Author(s):  
Gero Strauss ◽  
Kirill Koulechov ◽  
Mathias Hofer ◽  
Andreas Dietz ◽  
Christos Trantakis ◽  
...  
Keyword(s):  
Petrous Bone

Petrous Bone Meningiomas

Skull Base ◽  
2007 ◽  
Vol 17 (S 1) ◽  
Author(s):  
F. Calbucci
Keyword(s):  
Petrous Bone

Petrous bone lesions: surgical implementation and outcomes of extradural subtemporal approach

2021 ◽  
Author(s):  
Udom Bawornvaraporn ◽  
Ali R. Zomorodi ◽  
Allan H. Friedman ◽  
Takanori Fukushima
Keyword(s):  
Petrous Bone ◽  
Bone Lesions ◽  
Subtemporal Approach

scholarly journals Isolated Congenital Mastoid Cholesteatoma with no Involvement of Aditus Ad Antrum and Middle Ear

2021 ◽  
Vol 14 ◽  
pp. 117954762110140
Author(s):  
Pace Annalisa ◽  
Iannella Giannicola ◽  
Rossetti Valeria ◽  
Messineo Daniela ◽  
Visconti Irene Claudia ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Middle Ear ◽  
Mastoid Process ◽  
Reference List ◽  
Digastric Muscle ◽  
Diagnostic Features ◽  
Imaging Evaluation ◽  
Stylomastoid Foramen ◽  
Congenital Origin ◽  
Mastoid Region

Cholesteatoma is a non-neoplastic, keratinized squamous epithelial lesion that affects the temporal bone. The middle ear is the most frequent, while the isolated cholesteatoma of the mastoid is rare. The aim of this study was to describe a rare case of isolated mastoid cholesteatoma with no involvement of aditus ad antrum and middle ear including a literature review of the topic. This case report describes the case of a 58 years old female with a cholesteatoma isolated in the mastoid region, evidenced by imaging (computer tomography and magnetic resonance). A mastoidectomy was performed: mastoid process was completely involved, but antrum was not reached. Moreover, it reached the soft tissue of stylomastoid foramen as well as the posterior belly of the digastric muscle. In the literature few articles described cases of cholesteatoma isolated in the mastoid region. Research was conducted using PubMed and reference list and there were considered only reports about cholesteatoma exclusively located in the mastoid process without involvement of antrum or middle ear. Fourteen articles were included in this review, with a total number of 23 cases of cholesteatoma isolated in the mastoid region. All papers analyzed reported the cases of isolated mastoid cholesteatoma that presented a congenital origin. Its diagnosis is difficult, therefore, imaging evaluation is mandatory and surgery is the treatment of choice. Mastoid cholesteatomas without involvement of aditus ad antrum and middle ear are rare and only 23 cases are reported in literature. Our case is in line with all clinical and diagnostic features of this rare disease, but it is the only one that evidenced an exposure of the soft tissue of stylomastoid foramen as well as the posterior belly of the digastric muscle. The treatment of choice was the surgical one, avoiding damaging of important anatomo-functional structure.

scholarly journals Congenital Craniofacial Plexiform Neurofibroma in Neurofibromatosis Type 1

Diagnostics ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 218
Author(s):  
Antonella Cacchione ◽  
Alessia Carboni ◽  
Mariachiara Lodi ◽  
Rita De Vito ◽  
Andrea Carai ◽  
...  
Keyword(s):  
Neurofibromatosis Type 1 ◽  
Correct Diagnosis ◽  
Plexiform Neurofibroma ◽  
Neurofibromatosis Type ◽  
Detection Techniques ◽  
Life Threatening ◽  
Magnetic Resonance Imaging Mri ◽  
Diagnostic Work ◽  
Radiological Methods

We present a case demonstrating the performance of different radiographical imaging modalities in the diagnostic work-up of a patient with neurofibromatosis type 1 (NF1) and plexiform neurofibroma (PN). The newborn boy showed an expansive-infiltrative cervical and facial mass presented with macrocrania, craniofacial disfigurement, exophthalmos and glaucoma. A computer tomography (CT) and a magnetic resonance imaging (MRI) were performed. The CT was fundamental to evaluate the bone dysmorphisms and the MRI was crucial to estimate the mass extension. The biopsy of the lesion confirmed the suspicion of PN, thus allowing the diagnosis of NF1. PN is a variant of neurofibromas, a peripheral nerves sheath tumor typically associated with NF1. Even through currently available improved detection techniques, NF1 diagnosis at birth remains a challenge due to a lack of pathognomonic signs; therefore congenital PN are recognized in 20% of cases. This case highlights the importance of using different radiological methods both for the correct diagnosis and the follow-up of the patient with PN. Thanks to MRI evaluation, it was possible to identify earlier the progressive increasing size of the PN and the possible life threatening evolution in order to perform a tracheostomy to avoid airways compression.

En bloc petrosectomy using a Gigli saw for petroclival lesions

1995 ◽  
Vol 83 (3) ◽  
pp. 559-560 ◽  
Author(s):  
Tomio Sasaki ◽  
Makoto Taniguchi ◽  
Ichiro Suzuki ◽  
Takaaki Kirino
Keyword(s):  
Facial Nerve ◽  
Semicircular Canals ◽  
Petrous Bone ◽  
New Technique ◽  
En Bloc ◽  
Content Type ◽  
A New Technique ◽  
Transtentorial Approach ◽  
Fine Print

✓ The authors report a new technique for en bloc petrosectomy using a Gigli saw as an alternative to drilling the petrous bone in the combined supra- and infratentorial approach or the transpetrosal—transtentorial approach. It is simple and easy and avoids postoperative cosmetic deformity. This technique has been performed in 11 petroclival lesions without injuring the semicircular canals, the cochlea, or the facial nerve.

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