scholarly journals Hypertrophic Pachymeningitis of the Internal Auditory Canal Induced by a Labyrinthine Fistula Complicated With Cholesteatoma

2020 ◽  
pp. 014556132097261
Author(s):  
Kyeong Suk Park ◽  
Bong-Jin Shin ◽  
Chul Ho Jang
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Antibiotic Treatment ◽  
Dura Mater ◽  
Internal Auditory Canal ◽  
Resonance Imaging ◽  
Hypertrophic Pachymeningitis ◽  
Labyrinthine Fistula ◽  
First Case ◽  
Mri Image

Hypertrophic pachymeningitis (HP) is defined by inflammation and thickening of the dura mater, and the etiologic factors are idiopathic or secondary to various conditions. To date, HP in the internal auditory canal (IAC) has rarely been reported. There have only been 3 reports of HP in the IAC. Magnetic resonance imaging showed enhancement of along the IAC and vestibule. After antibiotic treatment, enhancement was reduced with visible seventh and eighth nerves. The patient underwent tympanomastoidectomy. To our knowledge, this is the first case of HP associated with a labyrinth fistula complicated by cholesteatoma. We report MRI image with literatures.

scholarly journals Arachnoid Cysts of the Internal Auditory Canal: Multiplanar Magnetic Resonance Imaging With Audio‐Vestibular Correlates

2021 ◽  
Author(s):  
Arianna Di Stadio ◽  
Laura Dipietro ◽  
Daniela Messineo ◽  
Massimo Ralli ◽  
Giampietro Ricci ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Internal Auditory Canal ◽  
Arachnoid Cysts ◽  
Resonance Imaging

Bony cochlear nerve canal and internal auditory canal measures predict cochlear nerve status

2017 ◽  
Vol 131 (8) ◽  
pp. 676-683 ◽  
Author(s):  
E Tahir ◽  
M D Bajin ◽  
G Atay ◽  
B Ö Mocan ◽  
L Sennaroğlu
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Temporal Bone ◽  
Internal Auditory Canal ◽  
Cochlear Nerve ◽  
Resonance Imaging ◽  
Canal Stenosis ◽  
Canal Diameter ◽  
Canal Atresia

AbstractObjectives:The bony cochlear nerve canal is the space between the fundus of the internal auditory canal and the base of the cochlear modiolus that carries cochlear nerve fibres. This study aimed to determine the distribution of bony labyrinth anomalies and cochlear nerve anomalies in patients with bony cochlear nerve canal and internal auditory canal atresia and stenosis, and then to compare the diameter of the bony cochlear nerve canal and internal auditory canal with cochlear nerve status.Methods:The study included 38 sensorineural hearing loss patients (59 ears) in whom the bony cochlear nerve canal diameter at the mid-modiolus was 1.5 mm or less. Atretic and stenotic bony cochlear nerve canals were examined separately, and internal auditory canals with a mid-point diameter of less than 2 mm were considered stenotic. Temporal bone computed tomography and magnetic resonance imaging scans were reviewed to determine cochlear nerve status.Results:Cochlear hypoplasia was noted in 44 out of 59 ears (75 per cent) with a bony cochlear nerve canal diameter at the mid-modiolus of 1.5 mm or less. Approximately 33 per cent of ears with bony cochlear nerve canal stenosis also had a stenotic internal auditory canal and 84 per cent had a hypoplastic or aplastic cochlear nerve. All patients with bony cochlear nerve canal atresia had cochlear nerve deficiency. The cochlear nerve was hypoplastic or aplastic when the diameter of the bony cochlear nerve canal was less than 1.5 mm and the diameter of the internal auditory canal was less than 2 mm.Conclusion:The cochlear nerve may be aplastic or hypoplastic even if temporal bone computed tomography findings indicate a normal cochlea. If possible, patients scheduled to receive a cochlear implant should undergo both computed tomography and magnetic resonance imaging of the temporal bone. The bony cochlear nerve canal and internal auditory canal are complementary structures, and both should be assessed to determine cochlear nerve status.

scholarly journals Intraparenchymal extravasation of gadolinium mimicking an enhancing brain tumor

2019 ◽  
Vol 32 (4) ◽  
pp. 273-276 ◽  
Author(s):  
David J Ritchie ◽  
Charles Q Li ◽  
Reid Hoshide ◽  
Daniel Vinocur
Keyword(s):  
Magnetic Resonance Imaging ◽  
Brain Tumor ◽  
Magnetic Resonance ◽  
Pediatric Patient ◽  
Essential Role ◽  
Accurate Diagnosis ◽  
Resonance Imaging ◽  
Intracranial Neoplasms ◽  
Vascular Abnormalities ◽  
First Case

Gadolinium (Gd)-enhanced magnetic resonance imaging plays an essential role in the detection, characterization, and staging of intracranial neoplasms and vascular abnormalities. Although Gd is helpful in a majority of situations, it can lead to diagnostic misinterpretation in the setting of active vascular extravasation. Scarce reports of intracranial extravasation of Gd are present in the literature. Here, we report the first case of surgically proven spontaneous intraparenchymal extravasation of Gd mimicking an enhancing intra-axial neoplasm in a pediatric patient. Early and accurate recognition of Gd extravasation is critical in obtaining the accurate diagnosis and triaging patients expeditiously into proper avenues of care.

Radiotherapy in the Maxillary Hemangioma

1996 ◽  
Vol 82 (6) ◽  
pp. 610-613 ◽  
Author(s):  
Angeles Rovirosa ◽  
Joan Berenguer ◽  
Alberto Sánchez-Reyes ◽  
Carlos Arias ◽  
Jordi Ferre ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Rare Tumor ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
First Case ◽  
Tumor Reduction

We present the case of a large maxillary hemangioma treated by radiotherapy. Only 4 cases managed by radiotherapy have been reported in the literature, and most authors negate the radiosensitivity of the tumor. In our patient, the outcome was excellent; by 6 months tumor reduction was more than 50%. This is the first case referred to in the literature whose radiotherapy response was evaluated by magnetic resonance imaging. We describe the clinical and imaging findings of this very rare tumor and its evolution. We also comment on the literature reviewed.

scholarly journals Chiari I Malformation Associated with Turner Syndrome

2017 ◽  
Vol 08 (02) ◽  
pp. 277-280 ◽  
Author(s):  
Kamble Jayaprakash Harsha ◽  
Jeevan S. Nair
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Turner Syndrome ◽  
Genetic Disease ◽  
Clinical Presentation ◽  
Chiari I Malformation ◽  
Resonance Imaging ◽  
Cough Headache ◽  
First Case ◽  
Chiari I

ABSTRACTTurner syndrome (TS) is a rare genetic disease due to the absence of one X chromosome. Patients with TS have more subtle neurological/neuropsychiatric problems, while headache is an uncommon clinical presentation which needs attention. We report a 12-year-old child presenting with typical cough headache. Her magnetic resonance imaging revealed Chiari I malformation associated with TS. To the best of our knowledge, Chiari I malformation associated with TS is not described in literature. We report the first case of TS associated with Chiari I malformation. Interestingly, Chiari I malformation is also associated with Noonan’s syndrome, which is a close morphological mimicker of TS, raising the possibility of sharing similar pathogenesis in both conditions.

Using Tomographic Medical Images as Objects of Portrait Examination

2019 ◽  
pp. 142-145
Author(s):  
G. V. Cherepenko
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Medical Images ◽  
Resonance Imaging ◽  
Examination Technique ◽  
Magnetic Resonance Imaging Mri ◽  
Practical Recommendations ◽  
Mri Image ◽  
Expert Practice

The paper provides an example from expert practice, during which a head image obtained using magnetic resonance imaging (MRI) was used as a sample. It is proposed to include an MRI image in a number of objects and samples considered by the current portrait examination technique. The nature of the suitability of such an object for the production of portrait examination is determined. Practical recommendations are given for working with the appropriate software to get the most visual picture.

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