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Kilmpasanis A, Tsetsos N, Poutoglidis A, Tsentemeidou A, Sotiroudi S, Garefis K, Forozidou E, Vlachtsis K. Schwannoma of the Zygomatic Branch of the Facial Nerve. EAR, NOSE & THROAT JOURNAL 2024; 103:145-147. [PMID: 34472361 DOI: 10.1177/01455613211041235] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
SIGNIFICANCE STATEMENT Facial nerve schwannoma is extremely uncommon. Despite its rarity, it is considered the most common facial nerve tumor and potentially affects any segment of the nerve. Presenting symptoms vary depending on the location of the neoplasm. Tumors pertaining to the extratemporal course of the nerve mainly appear as an asymptomatic parotid mass. We present a rare case of schwannoma of the zygomatic branch of the right facial nerve that was surgically resected, without facial nerve injury.
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Affiliation(s)
- Adamantios Kilmpasanis
- Department of Otorhinolaryngology-Head and Neck Surgery, G. Papanikolaou General Hospital, Thessaloniki, Greece
| | - Nikolaos Tsetsos
- Department of Otorhinolaryngology-Head and Neck Surgery, G. Papanikolaou General Hospital, Thessaloniki, Greece
| | - Alexandros Poutoglidis
- Department of Otorhinolaryngology-Head and Neck Surgery, G. Papanikolaou General Hospital, Thessaloniki, Greece
| | - Aikaterini Tsentemeidou
- First Academic Department of Dermatology and Venereology, School of Medicine, Aristotle University, Thessaloniki, Greece
| | - Sotiria Sotiroudi
- Department of Otorhinolaryngology-Head and Neck Surgery, G. Papanikolaou General Hospital, Thessaloniki, Greece
| | - Konstantinos Garefis
- Second Academic Department of Otorhinolaryngology-Head and Neck Surgery, Papageorgiou Hospital, Aristotle University of Thessaloniki, Greece
| | - Evropi Forozidou
- Department of Otorhinolaryngology-Head and Neck Surgery, G. Papanikolaou General Hospital, Thessaloniki, Greece
| | - Konstantinos Vlachtsis
- Department of Otorhinolaryngology-Head and Neck Surgery, G. Papanikolaou General Hospital, Thessaloniki, Greece
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Libell JL, Balar AB, Libell DP, Joseph JT, Hogg JP, Lakhani DA, Khan M. Facial nerve schwannoma: Case report and brief review of the literature. Radiol Case Rep 2023; 18:3442-3447. [PMID: 37502483 PMCID: PMC10369394 DOI: 10.1016/j.radcr.2023.06.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 07/29/2023] Open
Abstract
Schwannomas are rare nerve sheath tumors that can occur throughout the body, and are symptomatic based on location, size, and impingement on adjacent structures. These tumors are often benign lesions and occur sporadically or from genetic conditions such as neurofibromatosis. Schwannomas may arise from peripheral nerves, gastrointestinal nerves, spinal nerve roots and cranial nerves. Facial nerve schwannomas arise from cranial nerve VII, commonly involving the geniculate ganglion, labyrinthine segment, and internal auditory canal. While small lesions are asymptomatic, larger lesions can cause facial nerve paralysis, and facial spasms. Lesions in the internal auditory canal can cause hearing loss, tinnitus, vertigo, and otalgia. High-resolution CT imaging and MRI imaging are useful for distinguishing between other pathologies that arise from the same region. High-resolution CT scans can show bony degeneration of nearby structures such as the labyrinth or ossicles. MRI imaging shows hypo intensity on T1 imaging, and hyperintensity on T2 imaging. On T1 postcontrast, enhancement can be homogenous or heterogeneous with cystic degeneration if the lesion is large. Nodular enhancement is commonly seen on facial nerve schwannomas within the internal auditory canal. Vestibular schwannomas involving CN VIII are more common, and appear similar to facial nerve schwannomas, but can be distinguished apart due to growth in the geniculate ganglion and/or the labyrinthine segment. Management of asymptomatic or mild lesions is typically conservative with follow up imaging, and surgery for larger lesions. Here, we present a case of a facial nerve schwannoma in a 57-year-old woman.
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Affiliation(s)
- Joshua L. Libell
- School of Medicine, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, USA
| | - Aneri B. Balar
- Department of Radiology, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, USA
| | - David P. Libell
- Department of Neurology, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, USA
| | - Joe T. Joseph
- Department of Radiology, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, USA
| | - Jeffery P. Hogg
- Department of Radiology, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, USA
| | - Dhairya A. Lakhani
- Department of Radiology, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, USA
| | - Musharaf Khan
- Department of Radiology, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, USA
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