The Value of Enhanced Magnetic Resonance Imaging in the Evaluation of Endocochlear Disease

Hegarty, Joseph L.; Patel, Sandy; Fischbein, Nancy J.; Jackler, Robert K.; Lalwani, Anil K.

doi:10.1097/00005537-200201000-00002

Cited by 81 publications

(45 citation statements)

References 12 publications

(11 reference statements)

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“…Hemorrhage and lipoma, though rare, can easily be differentiated on precontrast T1-weighted imaging, appearing as high signal intensity without enhancement. 24,32 With improved spatial resolution, characterization will naturally follow. The proposed classification system is simple with straightforward anatomy as its foundation.…”

Section: Discussionmentioning

confidence: 99%

Intralabyrinthine Schwannomas: Imaging Diagnosis and Classification

Salzman

Childs

Davidson

et al. 2011

AJNR Am J Neuroradiol

126

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BACKGROUND AND PURPOSE: ILS is a rare lesion that has a different management from the more common "acoustic" schwannoma. To date, only 137 cases have been reported. We present a classification scheme based on labyrinthine anatomy to describe and localize these lesions. Treatment and prognosis hinge on the appropriate localization of these tumors; thus, a concise terminology that can be used by both the otolaryngologist and radiology communities is desirable.

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Section: Discussionmentioning

confidence: 99%

Intralabyrinthine Schwannomas: Imaging Diagnosis and Classification

Salzman

Childs

Davidson

et al. 2011

AJNR Am J Neuroradiol

126

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“…The offending pathogens are believed to invade the membranous labyrinth through the cochlear aqueducts or the lamina cribrosa of the vestibule, resulting in a suppurative labyrinthitis. 28 In cases of suppurative labyrinthitis due to spread from middle ear infections (tympanogenic labyrinthitis), organisms gain access into the inner ear through the round window, the oval window, or via an anomalous connection between the middle and inner ear. As such, hearing loss in these cases is typically unilateral.…”

Section: Infectious Labyrinthitismentioning

confidence: 99%

“…28 Contrast-enhanced T1WI may demonstrate enhancement of the inner ear, though the enhancement is typically not as strong as that in the acute phase. 31 On CT, the inner ear will appear normal, with no evidence of inner ear ossification (Fig 5).…”

Section: Infectious Labyrinthitismentioning

confidence: 99%

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Pediatric Sensorineural Hearing Loss, Part 2: Syndromic and Acquired Causes

Huang¹,

Zdanski²,

Castillo³

2011

AJNR Am J Neuroradiol

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SUMMARY:This article is the second in a 2-part series reviewing neuroimaging in childhood SNHL. Previously, we discussed the clinical work-up of children with hearing impairment, the classification of inner ear malformations, and congenital nonsyndromic causes of hearing loss. Here, we review and illustrate the most common syndromic hereditary and acquired causes of childhood SNHL, with an emphasis on entities that demonstrate inner ear abnormalities on cross-sectional imaging. Syndromes discussed include BOR syndrome, CHARGE syndrome, Pendred syndrome, Waardenburg syndrome, and X-linked hearing loss with stapes gusher. We conclude the article with a review of acquired causes of childhood SNHL, including infections, trauma, and neoplasms.ABBREVIATIONS: BOR ϭ branchio-oto-renal; CISS ϭ constructive interference in steady state; IAC ϭ internal auditory canal; NF-2 ϭ neurofibromatosis type II; SCC ϭ semicircular canal; SNHL ϭ sensorineural hearing loss; T1WI ϭ T1-weighted image; T2WI ϭ T2-weighted image T he estimated prevalence of SNHL in patients younger than 18 years of age is 6 per 1000, 1 making it one of the leading causes of childhood disability and a common reason for otolaryngology referrals. Cross-sectional imaging is now routinely performed in these patients because it provides important information about potential etiologies for hearing loss, defines the anatomy of the temporal bone and the central auditory pathway, and identifies additional intracranial abnormalities that may require further work-up. In the first part of our series, we reviewed some of the practical aspects related to imaging children with SNHL, including epidemiology, clinical work-up, and choices of imaging technique; we also discussed the classification of congenital inner ear malformations and congenital nonsyndromic causes of SNHL. In this article, we continue our discussion of neuroimaging for childhood SNHL, focusing on several of the most common syndromic hereditary forms of SNHL as well as acquired causes of hearing loss.

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“…Magnetic resonance imaging has revolutionized the diagnosis and treatment modalities of schwannoma [8] . It enables easy identification of the canalolabyrinthine subtype by high-resolution imaging.…”

Section: Discussionmentioning

confidence: 99%

“Canalolabyrinthine Schwannoma,” A Rare Variant of Intralabyrinthine Schwannoma: A Case Report

Sabatino

Greco²,

Quattrocchi³

et al. 2017

Int Adv Otol

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Canalolabyrinthine schwannoma is a rare subtype of neuroma. Only 1 case has been described in the literature. We report the clinical case of a 51-year-old Caucasian female with Meniere's disease-like symptoms. Magnetic resonance imaging showed right VIII cranial nerve schwannoma that had different characteristics from the classical described types. The peculiar features of our case of intralabyrithine canalolabyrinthine schwannoma directed the surgeon and radiologist to tailored considerations for follow-up and therapy.

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The Value of Enhanced Magnetic Resonance Imaging in the Evaluation of Endocochlear Disease

Abstract: Our experience suggests that GdMRI plays a crucial role in the diagnosis of cochlear pathology associated with sensorineural hearing loss and may directly impact patient management.

Cited by 81 publications

References 12 publications

Intralabyrinthine Schwannomas: Imaging Diagnosis and Classification

Intralabyrinthine Schwannomas: Imaging Diagnosis and Classification

Pediatric Sensorineural Hearing Loss, Part 2: Syndromic and Acquired Causes

“Canalolabyrinthine Schwannoma,” A Rare Variant of Intralabyrinthine Schwannoma: A Case Report

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