Huge Facial Schwannoma Extending Into the Middle Cranial Fossa and Cerebellopontine Angle Without Facial Nerve Palsy. Case Report.

Furuta, Shigeru; Hatakeyama, Tetsuhiro; Zenke, Kiichiro; Nagato, Shigeyuki

doi:10.2176/nmc.40.528

Cited by 12 publications

(13 citation statements)

References 9 publications

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“…They usually present with facial paresis and hearing loss [6]. Xerophthalmia, although pathognomonic of GSPN schwannoma may not be there in all patients and only present if parasympathetic nerve fibers have been destroyed by the tumor [7][8][9][10][11]. In previously reported cases only 6 patients had xerophthalmia [1,[12][13][14].…”

Section: Discussionmentioning

confidence: 99%

“…It can be easily misunderstood by schwannoma originating from geniculate ganglion, which usually causes bulbous enlargement of the geniculate fossa [5,4,13]. Therefore, Careful inspection of the skull base and anterosuperior aspect of the temporal bone is mandatory [8,16]. It is usually isodense to gray matter with homo-to heterogeneous post-contrast enhancement containing cystic or calcified foci on CT scan [3,6,[16][17][18].…”

Section: Discussionmentioning

confidence: 99%

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Greater Superficial Petrosal Nerve Schwannoma: 3 Case Reports and Review of Literature

Ansari¹,

Menon²,

Abraham³

et al. 2015

TONEUROSJ

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Greater superficial petrosal nerve (GSPN) schwannomas are very rare tumors. There are only 15 reports, described so far. In this study the authors discuss the clinical presentation, radiological features, surgical approach, postoperative outcome and follow up of 3 cases of this rare schwannoma of the middle fossa, possibly originating from GSPN together with the review of existing literature. The presenting features were facial paresis in all cases, xerophthalmia in case 1, and tinnitus in case 2. Imaging studies showed a sub-temporal extradural mass on the anterosuperior aspect of the petrous bone in all cases. All tumors were removed through a subtemporal extradural microsurgical approach. Improvement of facial weakness and xerophthalmia as an end result is characteristic post-operative finding.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Greater Superficial Petrosal Nerve Schwannoma: 3 Case Reports and Review of Literature

Ansari¹,

Menon²,

Abraham³

et al. 2015

TONEUROSJ

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“…Besides abundant tumor blood flow also supporting the facial nerve, thus maintaining nerve function [4].…”

Section: Discussionmentioning

confidence: 99%

“…Moreover the tumor location at the horizontal portion, between the internal auditory canal and the geniculate ganglion, where many dehiscences in the surrounding petrous bone could easily protect the facial nerve from the compression force of the tumor [4].…”

Section: Discussionmentioning

confidence: 99%

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Facial Nerve Schwannoma Involving Middle Cranial Fossa: When the Unilateral Sensorineural Hearing Loss Guide to the Correct Diagnosis

Stefano

Kulamarva²

2011

Indian J Otolaryngol Head Neck Surg

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The Facial Nerve Schwannoma is a rare tumor and it seldom involved the middle cranial fossa. Facial nerve schwannoma has various manifestations, including facial palsy but unfortunately facial nerve is very resistant to compression and often facial nerve paralysis or a facial weakness are not present. We present a case of giant facial nerve schwannoma involved the middle cranial fossa without facial nerve paralysis. In these cases the unilateral hearing loss (if present) guide to a correct diagnosis.

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Large facial nerve schwannomas without facial palsy: case reports and review of the literature

et al. 2005

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Although approximately 30% of facial nerve schwannoma cases present with no facial palsy, a large facial nerve schwannoma extending to the middle and posterior cranial fossa quite rarely presents without facial palsy. The authors encountered two patients with large facial nerve schwannoma who presented with only hearing impairment and no facial palsy. The first patient was a 64-year-old woman who presented with right auditory impairment without facial palsy. MR images demonstrated a dumbbell-shaped tumor in the cerebellopontine angle. Another patient, a 40-year-old woman, also presented with vertigo and right tinnitus without facial palsy. MR images demonstrated a huge tumor expanding into both the posterior cranial fossa and middle cranial fossa. In both cases, intraoperative findings confirmed that the tumors had grown from the facial nerve. Facial nerve schwannoma can be easily diagnosed if detailed neurological evaluations and appropriate neuroimagings are conducted. However, in spite of such huge tumoral size and expanding pattern, the facial nerve function was relatively preserved. Anatomical features of the facial schwannoma are discussed. A tumor extending to the middle and posterior cranial fossa should remind neurosurgeons to consider facial nerve schwannomas even in the absence of facial palsy.

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Huge Facial Schwannoma Extending Into the Middle Cranial Fossa and Cerebellopontine Angle Without Facial Nerve Palsy. Case Report.

Cited by 12 publications

References 9 publications

Greater Superficial Petrosal Nerve Schwannoma: 3 Case Reports and Review of Literature

Greater Superficial Petrosal Nerve Schwannoma: 3 Case Reports and Review of Literature

Facial Nerve Schwannoma Involving Middle Cranial Fossa: When the Unilateral Sensorineural Hearing Loss Guide to the Correct Diagnosis

Large facial nerve schwannomas without facial palsy: case reports and review of the literature

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