scholarly journals VP25.10: Fetal MRI findings of unilateral internal auditory canal enlargement and prominent posterior petrous ridge: an additional feature of PHACES syndrome

2020 ◽  
Vol 56 (S1) ◽  
pp. 164-165
Author(s):  
S.T. Desai
Keyword(s):  
Internal Auditory Canal ◽  
Fetal Mri ◽  
Mri Findings ◽  
Phaces Syndrome ◽  
Canal Enlargement

S230 – MRI Findings in Delayed Facial Palsy after Stapedectomy

2008 ◽  
Vol 139 (2_suppl) ◽  
pp. P152-P152 ◽  
Author(s):  
Marc Cohen ◽  
Claudia Kirsch ◽  
Abie Mendelsohn ◽  
Akira Ishiyama
Keyword(s):  
Facial Nerve ◽  
Facial Paralysis ◽  
Facial Palsy ◽  
Rare Complication ◽  
Internal Auditory Canal ◽  
Facial Nerve Paralysis ◽  
Mri Findings ◽  
Nerve Paralysis ◽  
Oral Corticosteroids ◽  
Magnetic Resonance Imaging Mri

Objectives 1) To retrospectively review the pathophysiology and radiologic features of delayed facial palsy after stapedectomy. 2) To discuss the management strategy of this unusual problem. Methods 450 stapedectomies performed at our institution were retrospectively reviewed from 1997 to 2007. A total of 2 patients in this series developed a delayed facial paralysis postoperatively. The clinical presentation, radiographic characteristics on magnetic resonance imaging (MRI), and the management of these patients are presented. Results A total of 2 patients out of 450 stapedectomies within a 10-year period developed the rare complication of delayed facial paralysis (postoperative days 12 and 41, respectively). Both patients developed rapidly progressive complete facial nerve paralysis preceded by periauricular pain and dysguesia. No sign of infection was present in the operated ear. MRI with gadolinium of the internal auditory canal demonstrated gadolinium enhancement of the labyrinthine portion of the facial nerve as seen in Bell's palsy. Both patients were treated with oral corticosteroids and antiviral medications. Subsequent imaging revealed decreased enhancement of the facial nerve with complete resolution of facial paralysis. Conclusions In the rare complication of delayed facial paralysis after stapedectomy, MR imaging is a useful diagnostic tool to dictate the treatment strategy. Delayed facial paralysis following stapedectomy can be treated medically when the MRI scan demonstrates enhancement of the facial nerve in the labyrinthine segment.

scholarly journals Internal auditory canal hypoplasia associated with bilateral vestibulocochlear nerve aplasia and deviant facial nerve course: A case report and MRI findings

2021 ◽  
Vol 15 (5) ◽  
Author(s):  
Licia Pacheco Luna ◽  
Luiz Ricardo Araujo Uchoa ◽  
Luiz Arthur Brasil Gadelha Farias ◽  
Debora Lilian Nascimento Lima ◽  
Pablo Picasso De Araujo Coimbra
Keyword(s):  
Case Report ◽  
Facial Nerve ◽  
Internal Auditory Canal ◽  
Mri Findings ◽  
Vestibulocochlear Nerve

scholarly journals Duplicated Internal Auditory Canal: High-Resolution CT and MRI Findings

2019 ◽  
Vol 20 (5) ◽  
pp. 823 ◽  
Author(s):  
Linsheng Wang ◽  
Lihong Zhang ◽  
Xian Li ◽  
Xiang Guo
Keyword(s):  
High Resolution ◽  
Internal Auditory Canal ◽  
Mri Findings ◽  
High Resolution Ct ◽  
Ct And Mri

scholarly journals OC06.03: Fetal MRI findings in a cohort of 26 cases of prenatally diagnosed CHARGE syndrome

2018 ◽  
Vol 52 ◽  
pp. 13-13
Author(s):  
A. Millischer ◽  
P. Sonigo ◽  
T. Attie-Bitach ◽  
E. Spaggiari ◽  
B. Bessières ◽  
...  
Keyword(s):  
Fetal Mri ◽  
Charge Syndrome ◽  
Mri Findings

Preoperative Differentiation between Meningioma of the Cerebellopontine Angle and Acoustic Neuroma Using MRI

1993 ◽  
Vol 109 (1) ◽  
pp. 88-95 ◽  
Author(s):  
Anil K. Lalwani ◽  
Robert K. Jackler
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
San Francisco ◽  
Acoustic Neuroma ◽  
Cerebellopontine Angle ◽  
Internal Auditory Canal ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Dural Tail ◽  
Magnetic Resonance Imaging Mri

Preoperative differentiation between acoustic neuroma (AN) and meningioma of the cerebellopontine angle (CPA) is important in selection of the surgical approach, successful tumor removal, and preservation of hearing and facial nerve. We retrospectively reviewed the magnetic resonance imaging (MRI) findings associated with 30 meningiomas involving the CPA (MCPA) encountered between 1987 to 1991 at the University of California, San Francisco. Magnetic resonance imaging was critical in differentiating meningioma from AN in the CPA. Typical findings on MRI associated with MCPA, differentiating them from ANs, Include: Meningiomas are sessile, possessing a broad base against the petrous face, whereas ANs are globular; they are often extrinsic and eccentric to the internal auditory canal (IAC); when involving the IAC, they usually do not erode the IAC; MCPAs demonstrate hyperostosis of the subjacent bone and possess intratumoral calcification; they involve adjacent intracranial spaces and structures; and meningiomas are characterized by a distinctive dural “tail” extending away from the tumor surface. While any one finding may not be diagnostic by itself, taken together the constellation of these findings is strongly Indicative of meningioma. In our experience, MRI with gadolinium enhancement was able to distinguish MCPA from AN in nearly every case.

scholarly journals Hemangioma of the Internal Auditory Canal and PHACES Syndrome: A Rare Finding in a Rare Syndrome

2019 ◽  
Vol 99 (3) ◽  
pp. 192-193
Author(s):  
Mariline Santos ◽  
Gonçalo J. Mendes ◽  
Ana N. Pinto ◽  
Miguel B. Coutinho ◽  
Cecília A. Sousa
Keyword(s):  
Internal Auditory Canal ◽  
Rare Finding ◽  
Phaces Syndrome ◽  
Rare Syndrome

scholarly journals The impact of adding fetal MRI to sonographically diagnosed intrauterine ventriculomegaly: a prospective cohort study

2021 ◽  
Vol 10 (2) ◽  
Author(s):  
Mostafa Mahmod ◽  
Sara M Ragaee ◽  
Soha T Hamed ◽  
Ahmed Abbas ◽  
Mohamed A.F. Mourad
Keyword(s):  
Cohort Study ◽  
Prospective Cohort Study ◽  
Prospective Cohort ◽  
Fetal Mri ◽  
Added Value ◽  
University Hospital ◽  
Mri Findings ◽  
Sonographic Examination ◽  
Predictive Values ◽  
The Impact

Objective: Intrauterine fetal ventriculomegaly (IVM) is one of the most commonly detected fetal anomalies. Prenatal diagnosis in IVM is considered a challenge with a significant impact on management. The current study aims to evaluate the added value of performing fetal MRI to sonographically diagnosed IVM. Methods: A prospective cohort study was conducted at a tertiary University Hospital in the period between January 2017 and March 2019. We included pregnant women with a single fetus sonographically diagnosed IVM (symmetrical or asymmetrical). First, a basic obstetric sonographic examination was done, followed by a detailed (2D/3D) fetal CNS anomaly scan for the detection of other associated anomalies. A fetal MRI brain scan was performed for all cases. Results: Sixty women were included in the study. Of the 60 fetuses with IVM, additional findings were seen on MRI in 14 cases (23%), and most of these findings were identified in fetuses with severe IVM (about 50%). No additional abnormalities were identified in fetuses of less than 24 weeks gestation. Callosal and septum pellucidum lesions (29%), along with posterior fossa abnormalities (28%) and cortical malformations (21%) accounted for the most common additional significant fetal MRI findings. Fetal MRI sensitivity, specificity, and positive and negative predictive values in correlation with those of prenatal ultrasound turned out to be notably higher, approaching nearly 100 %. Conclusions: Fetal MRI for sonographically diagnosed moderate or severe IVM is recommended to guide clinical management.

Fetal MRI findings in a retrospective cohort of 26 cases of prenatally diagnosed CHARGE syndrome individuals

2019 ◽  
Vol 39 (9) ◽  
pp. 781-791 ◽  
Author(s):  
Anne‐Elodie Millischer ◽  
Pascale Sonigo ◽  
Tania Attie ◽  
Emmanuel Spaggiari ◽  
Neil O'Gorman ◽  
...  
Keyword(s):  
Retrospective Cohort ◽  
Fetal Mri ◽  
Charge Syndrome ◽  
Mri Findings

Radiographic Exhibit: Internal Auditory Canal Enlargement in Neurofibromatosis without Acoustic Neuroma

Radiology ◽  
1977 ◽  
Vol 122 (3) ◽  
pp. 730-730 ◽  
Author(s):  
Michael C. Hill ◽  
Kook Sang Oh ◽  
Fred J. Hodges
Keyword(s):  
Acoustic Neuroma ◽  
Internal Auditory Canal ◽  
Canal Enlargement
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