Evaluating the utility of a scoring system for lipomas of the cerebellopontine angle

Lagman, Carlito; Voth, Brittany; Chung, Lawrance K.; Bui, Timothy T.; Lee, Seung Joon; Barnette, Natalie E.; Gopen, Quinton; Yang, Isaac

doi:10.1007/s00701-017-3076-5

Cited by 4 publications

(17 citation statements)

References 88 publications

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“…Fat‐containing T1‐hyperintense non‐enhancing extra‐axial CPA masses include lipomas . Fat suppression techniques silence lipomas . Our patient's lesion was hypo‐ to isointense on T1‐weighted images and poorly enhancing.…”

Section: Discussionmentioning

confidence: 68%

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Neuroglial ectopia of the vestibular nerve masquerading as a vestibular schwannoma: A case report

et al. 2018

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Neuroglial ectopia is a rare entity of undetermined clinical significance. Here, we report a unique case of neuroglial ectopia of the vestibular nerve. A 27-year-old pharmacy student with a previous radiological diagnosis of vestibular schwannoma presented to our clinic for surgical evaluation. Magnetic resonance imaging (MRI) of the brain revealed a 17-mm T1 hypo- to isointense, T2 iso- to hyperintense, poorly enhancing left cerebellopontine angle mass extending into the left internal auditory canal compatible by imaging with a vestibular schwannoma. The lesion was resected under MRI guidance. The frozen specimen came back as a benign hypocellular lesion. Histological assessment revealed a peripheral nerve engulfed by glial fibrillary acidic protein-positive, S-100-negative cells, suggestive of neuroglial ectopia. There was no evidence of schwannoma. The main concerns were benign neoplasm with potential for progression or sampling artifact. The patient had an uncomplicated hospital course. This case report demonstrates an unusual case of neuroglial ectopia of the vestibular nerve. The differential diagnoses for a poorly enhancing cerebellopontine angle mass should include neuroglial ectopia.

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Section: Discussionmentioning

confidence: 68%

“…Our case differs from those cases in that our patient was an adult and his mass was primarily in the cranial vault. Fat‐containing T1‐hyperintense non‐enhancing extra‐axial CPA masses include lipomas . Fat suppression techniques silence lipomas .…”

Section: Discussionmentioning

confidence: 99%

Neuroglial ectopia of the vestibular nerve masquerading as a vestibular schwannoma: A case report

et al. 2018

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“…Most intracranial lipomas tend to be midline, supratentorial, and involve the corpus callosum [ 5 , 9 - 10 ]. CPA lipomas comprise approximately 10% of intracranial lipomas, 0.14-0.15% of CPA tumors, and 0.1-0.5% of intracranial tumors overall [ 5 , 7 , 11 - 12 ].…”

Section: Reviewmentioning

confidence: 99%

“…It is unknown if intracranial lipomas are more likely to occur in men or women [ 4 - 5 , 11 ]. Literature regarding sidedness for lipomas is also lacking [ 11 ].…”

Section: Reviewmentioning

confidence: 99%

“…It is unknown if intracranial lipomas are more likely to occur in men or women [ 4 - 5 , 11 ]. Literature regarding sidedness for lipomas is also lacking [ 11 ]. Bacciu et al calculated from their sample size of eight patients that the mean age at diagnosis of internal auditory canal (IAC) CPA lipomas was 44.8 years and ranged from 31 to 74 years [ 4 ].…”

Section: Reviewmentioning

confidence: 99%

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Diagnostic Dilemma: Cerebellopontine Angle Lipoma Versus Dermoid Cyst

Bertot

Steele

Boghani

et al. 2017

Cureus

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Both lipomas and dermoid cysts of the cerebellopontine angle are rare tumors. These tumors differ in their embryological origin but share similar features on imaging. Both of these congenital lesions can be found in the cerebellopontine angle (CPA), and symptomatic clinical presentation is dictated by the location of the lesion. This paper demonstrates a unique case in which a CPA lipoma was misidentified as a dermoid cyst, leading to surgical intervention. Further, the paper provides a literature review of CPA lipomas and dermoid cysts to aid readers in further differentiating between these two unique tumors.

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Primary Lymphoma of Internal Acoustic Meatus Mimicking Vestibular Schwannoma—A Rare Diagnostic Dilemma

et al. 2021

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Background/Setting A subject presenting with a unilateral sensorineural hearing loss and with vertigo/imbalance and a lesion of internal acoustic meatus (IAM) most often represents a vestibular schwannoma. Several alternative pathologies involving the region, with clinical and neuroradiological similarities, could lead to an error in judgement and management. Rare tumors of the IAM pose unique diagnostic difficulty. A rare case that we present here had a typical history and imaging findings suggestive of vestibular schwannoma. A primary central nervous system (CNS) lymphoma was diagnosed in later stages of brain involvement warranting a retrospective analysis of the entity. Case Summary An 80-year-old male presented with unilateral sensorineural hearing loss, vertigo, and imbalance. On imaging, he was found to have a lesion in the left internal auditory meatus, reported as a vestibular schwannoma and operated upon. Subject's condition worsened with time and a repeat imaging was suggestive of a CNS lymphoma with lesions involving bilateral cerebellum and subcortical white matrix. Conclusion To conclude, primary CNS lymphoma presenting an isolated lesion in the IAM with no other parenchymal lesions at presentation is a rare incidence; to our knowledge this is the first case of such unique presentation.

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Evaluating the utility of a scoring system for lipomas of the cerebellopontine angle

Cited by 4 publications

References 88 publications

Neuroglial ectopia of the vestibular nerve masquerading as a vestibular schwannoma: A case report

Neuroglial ectopia of the vestibular nerve masquerading as a vestibular schwannoma: A case report

Diagnostic Dilemma: Cerebellopontine Angle Lipoma Versus Dermoid Cyst

Primary Lymphoma of Internal Acoustic Meatus Mimicking Vestibular Schwannoma—A Rare Diagnostic Dilemma

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