Localized mastoiditis simulating a facial nerve schwannoma on MRI

Vlahos, Lambros; Yiotakis, John; Gouliamos, A.; Kotoulas, G.; Adamopoulos, G.

doi:10.1017/s0022215100128762

Cited by 4 publications

(2 citation statements)

References 6 publications

(5 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Intraoperative demonstration of the lesion arising from the facial nerve is imperative for the diagnosis and exclusion of other possibilities, especially vestibular schwannomas. [ 10 ] Subtemporal, transmastoid, translabyrinthine, and retrosigmoid approaches are the principal routes depending on the site of origin. Preservation of facial nerve function poses the main surgical difficulty.…”

Section: Discussionmentioning

confidence: 99%

Rare Cranial Nerve Schwannomas: A Retrospective Review of Nontrigeminal, Nonvestibular Cranial Nerve Schwannomas

Deora

Srinivas

Beniwal

et al. 2018

Journal of Neurosciences in Rural Practice

View full text Add to dashboard Cite

Introduction:Intracranial schwannomas arising from non-trigeminal and non-vestibular sources are extremely rare constituting <0.8% of all schwannomas. In this article, we have analyzed our experience in the management of these rare tumors over a 10-year period.Material and Methods:There were a total of 16 cases, with 11 of them undergoing microsurgical resection and 5 undergoing stereotactic radiosurgery (SRS).Results:There were no fresh neurological deficit in any of these patients and two patients underwent postoperative SRS for residual tumor. One patient died due to postoperative septicemia.Conclusion:Knowledge of these lesions along with their clinicoradiological profile is essential to maintain a high index of suspicion and understand the nuances of treatment.

show abstract

Section: Discussionmentioning

confidence: 99%

Rare Cranial Nerve Schwannomas: A Retrospective Review of Nontrigeminal, Nonvestibular Cranial Nerve Schwannomas

Deora

Srinivas

Beniwal

et al. 2018

Journal of Neurosciences in Rural Practice

View full text Add to dashboard Cite

show abstract

“…The clue to diagnosis is an intact facial canal on CT and high-signal intensity on T2weighted MRIs. 20 Histologically, however, facial nerve neuromas are identical to acoustic neuromas and have the same enhancement characteristics. Therefore, it is seldom possible to identify the nerve of origin of a neuroma in the internal acoustic canal.…”

Section: Discussionmentioning

confidence: 99%

Facial Nerve Neuroma: Clinical, Diagnostic, and Surgical Features

et al. 2004

View full text Add to dashboard Cite

Facial nerve neuromas are uncommon benign tumors. The diversity of tumor locations and their proximity to vital neurovascular structures create a variety of clinical situations, and the management strategy for each case differs. Two cases with tumors located at different sites and associated with different clinical presentations are discussed in terms of diagnosis and management.KEYWORDS: Neuroma, facial nerve, chorda tympani, paralysis Facial nerve neuromas are uncommon benign neoplasms of Schwann cells. They compose only 0.8% of all intrapetrous mass lesions. 1 More than 300 cases have been reported since they were described by Schmidt in 1930. 2 These tumors can arise from any segment of the nerve from the cerebellopontine angle to the extratemporal peripheral portion. 3,4 The diversity of locations involved with the tumor and their proximity to the auditory apparatus can create a variety of clinical situations. 4 Thus, the site of the tumor, its extension, and the way it involves the surrounding structures determine the surgical approach.This article presents two cases of facial nerve neuroma involving different locations and clinical manifestations, focusing on the diagnostic and therapeutic problems encountered. CASE REPORTS Case 1A 38-year-old woman sought treatment for left facial paralysis, dizziness, and hearing loss and tinnitus in her left ear that had been present for about 1 year. Otoscopy revealed an intact tympanic membrane. A reddish mass was seen behind the tympanic mass. Neurological examination revealed total facial paralysis (i.e., House-Brackmann grade VI). Pure-tone audiometry indicated unilateral sensorineural hearing loss in the left ear with airand bone-conduction thresholds elevated to 60 dB hearing loss. The tympanogram was type-B on the left side. The acoustic reflex was absent to acoustic stimuli on the left side. Computerized tomography

show abstract