Extratemporal intraparotid facial nerve schwannoma

Schwannomas of the eighth nerve are common, usually found in syndromic association with neurofibromatosis-2. The occurrence of seventh nerve schwannoma, especially in its extratemporal course, is very rare. Here, we present a case report of an extratemporal facial nerve schwannoma diagnosed preoperatively with cytopathology and postoperative histopathologic confirmation. Histopathology provides the confirmatory diagnosis in such cases. An atypical diagnosis of neural schwannomas should be kept in mind when facial palsy is clinically encountered in the absence of any other aetiological factors.

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Facial Nerve Schwannoma: The Rare/Great Mimicker of Vestibular Schwannoma/Neuroma

Indian Journal of Radiology and Imaging ◽

10.1055/s-0041-1734356 ◽

2021 ◽

Author(s):

Deepthi Pathapati ◽

Kiran Barla ◽

Monal Dayal ◽

Rajitha Gati ◽

Praveen Kumar Lakota

Keyword(s):

Facial Nerve ◽

Schwann Cells ◽

Benign Tumors ◽

Facial Weakness ◽

Vestibulocochlear Nerve ◽

Seventh Nerve ◽

Clinical Presentations ◽

Topographical Anatomy ◽

Facial Nerve Schwannoma ◽

Early Surgical Intervention

AbstractSchwannomas are benign tumors arising from Schwann cells which are a protective casing of nerves, composing myelin sheath and can develop in any nerve where Schwann cells are present. Most common are vestibulocochlear nerve schwannomas. Facial nerve schwannomas (FNSs) are uncommon tumors involving seventh nerve of which geniculate ganglion involvement is most common. Clinical presentations and the imaging appearances of FNSs are influenced by the topographical anatomy of the facial nerve and vary according to the segments involved. We report a case of 73-year-old man presenting with right side facial weakness of lower motor neuron type involvement. Computed tomography and magnetic resonance imaging are clinching the diagnosis. An early diagnosis is important in containing the disease facilitating early surgical intervention.

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Congenital unilateral facial palsy revealing a facial nerve agenesis: a case report and review of the literature

BJR|case reports ◽

10.1259/bjrcr.20180029 ◽

2019 ◽

Vol 5 (1) ◽

pp. 20180029

Author(s):

Yaotse Elikplim Nordjoe ◽

Ouidad Azdad ◽

Mohamed Lahkim ◽

Laila Jroundi ◽

Fatima Zahrae Laamrani

Keyword(s):

Case Report ◽

Facial Nerve ◽

Temporal Bone ◽

Facial Paralysis ◽

Facial Palsy ◽

Rare Condition ◽

Review Of The Literature ◽

Moebius Syndrome ◽

Temporal Bone Ct

Facial nerve aplasia is an extremely rare condition that is usually syndromic, namely, in Moebius syndrome. The occurrence of isolated agenesis of facial nerve is even rarer, with only few cases reported in the literature. We report a case of congenital facial paralysis due to facial nerve aplasia diagnosed on MRI, while no noticeable abnormality was detected on the temporal bone CT.

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A Synchronous Facial Nerve Schwannoma and Neurofibroma: Case Report and Review of the Literature

The Laryngoscope ◽

10.1002/lary.21996 ◽

2011 ◽

Vol 121 (S4) ◽

pp. S119-S119

Author(s):

BC Gross ◽

ML Carlson ◽

B Scheithauer ◽

CLW Driscoll ◽

EJ Moore

Keyword(s):

Case Report ◽

Facial Nerve ◽

Review Of The Literature ◽

Facial Nerve Schwannoma

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Commentary “Surgical Management of PICA Aneurysm and Incidental Facial Nerve Schwannoma: Case Report”

Skull Base ◽

10.1055/s-2006-953516 ◽

2007 ◽

Vol 17 (2) ◽

pp. 150-151

Author(s):

Jacques Morcos

Keyword(s):

Case Report ◽

Facial Nerve ◽

Surgical Management ◽

Facial Nerve Schwannoma

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Middle Fossa Approach for Facial Nerve Schwannoma Aiming for Functional Improvement: 2-Dimensional Operative Video

Operative Neurosurgery ◽

10.1093/ons/opz178 ◽

2019 ◽

Vol 18 (5) ◽

pp. E167-E168

Author(s):

Ken Matsushima ◽

Michihiro Kohno ◽

Hitoshi Izawa ◽

Yujiro Tanaka

Keyword(s):

Facial Nerve ◽

Facial Palsy ◽

Tumor Resection ◽

Nerve Fibers ◽

Middle Fossa ◽

Tumor Removal ◽

Middle Fossa Approach ◽

Brainstem Response ◽

Facial Nerve Schwannoma

Abstract The treatment paradigm of skull base surgery has been changed from radical tumor resection to maximal tumor removal while giving priority to functional preservation. Facial nerve schwannoma is one of the representative disorders of this type of paradigm shift.1 This video demonstrates facial nerve schwannoma surgery through the middle fossa approach, aiming for improvement of facial function. A 33-yr-old woman presented with gradually worsening facial palsy (House-Brackmann grade IV), dizziness, and nausea. Neuroimaging revealed a growing tumor involving the geniculate ganglion, and extending to the middle fossa, internal acoustic meatus, and cerebellopontine angle. The nerve-sparing surgery through the left middle fossa approach was performed under detailed neuromonitoring including the evoked facial electromyograms and auditory brainstem response. The facial nerve fibers were involved within the tumor mass and the plane between the tumor and facial nerve could not be identified as seen in most cases of such large facial nerve schwannomas. But sufficient tumor removal with facial nerve preservation was achieved owing to continuous facial monitoring.2 The patient had no new neurological deficits. Her facial palsy has been gradually improving, now at grade III, without any signs of tumor regrowth during the 10 mo of follow up after the operation. Careful follow up is being continued to survey the possible tumor recurrence. The video was reproduced after informed consent of the patient.

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A case report of facial nerve palsy associated with chickenpox

The Journal of Laryngology & Otology ◽

10.1017/s002221510012780x ◽

1994 ◽

Vol 108 (8) ◽

pp. 676-678 ◽

Cited By ~ 7

Author(s):

Yoshiharu Watanabe ◽

Minoru Ikeda ◽

Nobuo Kukimoto ◽

Mutsumi Kuga ◽

Hiroshi Tomita

Keyword(s):

Case Report ◽

Facial Nerve ◽

Facial Palsy ◽

Poor Prognosis ◽

Nerve Palsy ◽

Facial Nerve Palsy ◽

English Literature ◽

Infection Route ◽

Peripheral Facial Palsy ◽

Route Of Infection

AbstractWe examined a very unusual patient who developed peripheral facial palsy with chickenpox. A survey of the English literature revealed that eight such patients had been reported, but the period between the appearance of the vesicles of varicella and the facial nerve palsy ranged from five days before to 16 days after the eruption development. We presume that the route of infection was neurogenous in patients who had palsy after the appearance of the eruptions, but haematogenous in patients who had palsy before the appearance of vesicles. The two patients whose infection route was presumed to be haematogenous, had a poor prognosis.

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