Giant Air Cell of the Petrous Apex: A Possible Cause of Facial Hypalgesia

1992 ◽  
Vol 101 (8) ◽  
pp. 685-687
Author(s):  
Makoto Sakai ◽  
Tetsuro Ogata ◽  
Mutsumi Sato ◽  
Tatsumi Kaga ◽  
Hirosato Miyake ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Magnetic Resonance ◽  
Trigeminal Nerve ◽  
Magnetic Resonance Image ◽  
Petrous Apex ◽  
Large Signal ◽  
Void Area ◽  
Signal Void ◽  
Possible Cause

A giant air cell of the left petrous apex was found in a 23-year-old man with ipsilateral facial hypalgesia. The size of the giant air cell depicted on computed tomography was 1.5 × 2.0 × 2.0 cm. A coronal T1-weighted magnetic resonance image showed that the trigeminal nerve was compressed superomedially by a large signal void area that was probably a result of excessive pneumatization of the petrous apex. It is suggested that the facial hypalgesia was caused by the compression by the giant air cell of the petrous apex on the trigeminal nerve.

Skull base osteomyelitis interpreted as malignancy

1999 ◽  
Vol 113 (8) ◽  
pp. 775-778 ◽  
Author(s):  
N. Subburaman ◽  
M. K. Chaurasia
Keyword(s):  
Computed Tomography ◽  
Magnetic Resonance ◽  
Skull Base ◽  
Clinical Judgment ◽  
Magnetic Resonance Image ◽  
External Otitis ◽  
Skull Base Osteomyelitis ◽  
Malignant External Otitis ◽  
Mri Scans

AbstractLesions in the skull base may present difficulties in diagnosis primarily because the access needs to be invasive and one has to rely on imaging that may still be misleading. The case presented here illustrates this example in that the patient had abnormalities on computed tomography (CT) and magnetic resonance image (MRI) scans quite convincing of malignancy but which with time proved, essentially through clinical judgment, to be skull base osteomyelitis secondary to malignant external otitis (OME).

scholarly journals Central nervous system abnormalities on midline facial defects with hypertelorism detected by magnetic resonance image and computed tomography

2006 ◽  
Vol 64 (4) ◽  
pp. 916-920 ◽  
Author(s):  
Vera Lúcia Gil-da-Silva-Lopes ◽  
Silvio David Araújo Giffoni
Keyword(s):  
Computed Tomography ◽  
Central Nervous System ◽  
Nervous System ◽  
Magnetic Resonance ◽  
Magnetic Resonance Image ◽  
Unknown Etiology ◽  
X Rays ◽  
Group I ◽  
Facial Defects ◽  
Cns Anomalies

The aim of this study were to describe and to compare structural central nervous system (CNS) anomalies detected by magnetic resonance image (MRI) and computed tomography (CT) in individuals affected by midline facial defects with hypertelorism (MFDH) isolated or associated with multiple congenital anomalies (MCA). The investigation protocol included dysmorphological examination, skull and facial X-rays, brain CT and/or MRI. We studied 24 individuals, 12 of them had an isolated form (Group I) and the others, MCA with unknown etiology (Group II). There was no significative difference between Group I and II and the results are presented in set. In addition to the several CNS anomalies previously described, MRI (n=18) was useful for detection of neuronal migration errors. These data suggested that structural CNS anomalies and MFDH seem to have an intrinsic embryological relationship, which should be taken in account during the clinical follow-up.

Imaging of Ossicular Prostheses

1994 ◽  
Vol 111 (4) ◽  
pp. 494-496 ◽  
Author(s):  
Barry E. Hirsch ◽  
Jane L. Weissman ◽  
Hugh D. Curtin ◽  
Donald B. Kamerer
Keyword(s):  
Computed Tomography ◽  
Magnetic Resonance ◽  
Middle Ear ◽  
Magnetic Resonance Image ◽  
Ossicular Chain ◽  
Synthetic Materials ◽  
Image Characteristics ◽  
Living Bone ◽  
Inorganic Constituents

The prostheses available for reconstruction of the ossicular chain have expanded to include a variety of synthetic materials. Hydroxyapatite contains the inorganic constituents found in human living bone and is currently being incorporated into many new prostheses. This study demonstrates the computed tomography and magnetic resonance image characteristics of eight middle ear prostheses, a block of dense hydroxyapatite, and a human incus. Imaging of ossicular prostheses is more informative with computed tomography.

Limbus Vertebra Demonstrated by Computed Tomography or Magnetic Resonance Image

2001 ◽  
Vol 8 (4) ◽  
pp. 475
Author(s):  
Weon-Wook Park ◽  
Young-Jun Choi ◽  
Sung-Jun Ahn ◽  
Jung-Tae Kim
Keyword(s):  
Computed Tomography ◽  
Magnetic Resonance ◽  
Magnetic Resonance Image ◽  
Limbus Vertebra
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