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Intraparotid schwannoma: A rare case report
Ajeet Kumar Khilnani1, Rekha Thaddanee2, Babubhai Parmar3
1Department of ENT, GMERS, Medical College and Hospital, Dharpur, Patan, Gujarat, India.
Summary
Schwannomas are rare parotid tumors that can mimic pleomorphic adenomas. This case highlights a facial nerve schwannoma presenting as an asymptomatic parotid mass, emphasizing the need for histopathology for accurate diagnosis.
Area of Science:
- Otolaryngology
- Neurosurgery
- Pathology
Background:
- Pleomorphic adenomas are the most common parotid gland tumors.
- Schwannomas, or peripheral nerve sheath tumors, are rare in the parotid region.
- Facial nerve schwannomas typically involve the intratemporal segment.
Observation:
- A case of an asymptomatic parotid swelling is presented.
- The swelling mimicked pleomorphic adenoma clinically, radiologically, and cytologically.
- Seventh nerve function was normal despite the tumor's location.
Findings:
- Histopathological examination revealed the parotid mass to be a schwannoma.
- The schwannoma presented as a peripheral nerve sheath tumor.
- This entity is rare, especially originating from the facial nerve in the parotid.
Implications:
- Accurate diagnosis of parotid masses requires histopathological confirmation.
- Schwannomas can present atypically, challenging clinical and radiological assessments.
- Consideration of rare differential diagnoses like schwannoma is crucial for parotid tumors.
