Abstract
In this report, we describe the rare presentation of a cystic intraparotid facial nerve schwannoma (IPFNS) in a young female who initially presented with a painful unifocal parotid mass gradually enlarging over 5 years. Preliminary imaging and cytology offered this to be a Warthin’s tumour. Here we describe the limitations of current diagnostic tools in the workup of intraparotid cystic lesions and highlight the importance of keeping rare tumours in mind to optimize pre-surgical management.
Highlights
Schwannomas are very rare, benign, slow--growing, encapsulated tumours of neuro-- ectodermal origin from neural sheath Schwann cells [1]
intraparotid facial nerve schwannoma (IPFNS) was first reported by Ibarz in 1927
The potential for a preoperative diagnosis of facial nerve schwannoma (FNS) is essential for treatment planning [12]
Summary
Schwannomas are very rare, benign, slow--growing, encapsulated tumours of neuro-- ectodermal origin from neural sheath Schwann cells [1]. Pre--operative diagnostic modalities such as an ultrasound scan (USS), magnetic resonance imaging (MRI) and fine needle aspiration cytology (FNAC) often narrow down the differentials when approaching parotid masses, aiding surgical excision. The patient subsequently underwent a surgical resection of the mass on the preoperative MRI and FNAC conclusion of a symptomatic Warthin’s tumour.
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