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Updated: Jan 25, 2026
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A Unified Methodological Framework for Vestibular Schwannoma Research
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Intramasseteric Schwannoma Derived from the Masseteric Nerve
Hajime Matsumine1, Ryo Sasaki2, Kaori Fujii1
1Department of Plastic and Reconstructive Surgery, Tokyo Women's Medical University, School of Medicine, Tokyo, Japan.
Plastic and Reconstructive Surgery. Global Open
|May 3, 2019
Summary
This case report details an extremely rare intramasseteric schwannoma of the masseteric nerve in a young woman. Surgical resection was successful, with no recurrence or complications observed one year post-operation.
Area of Science:
- Neurology
- Oncology
- Surgical Pathology
Background:
- Schwannomas are typically benign nerve sheath tumors.
- Intramasseteric schwannomas of the masseteric nerve are exceptionally rare.
Observation:
- A 24-year-old woman presented with an asymptomatic mass in the parotidomasseteric region.
- Magnetic resonance imaging revealed an isolated lesion within the masseter muscle.
- The masseteric nerve schwannoma was identified intraoperatively.
Findings:
- Histopathological examination confirmed a schwannoma with Antoni A and B patterns.
- The tumor measured 3.2 × 1.7 × 1.6 cm and was encapsulated.
- Complete resection was achieved with no post-operative complications or recurrence at 1 year.
Implications:
- This case highlights the possibility of intramasseteric schwannomas.
- Early diagnosis and surgical resection are crucial for favorable outcomes.
- Further research into rare nerve sheath tumors is warranted.
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