Schwannoma at an unusual locations: Report of two cases and review of literature

Abstract

Schwannomas are benign tumors of Schwann cells which are commonly seen at head, neck regions, and
extremities. Schwannomas at rare locations such as breast and parotid are very uncommon. Here, we
present two case reports of breast schwannoma and parotid schwannoma. In first case, 24-year-old female
presented with left breast lump which was clinically diagnosed as fibroadenoma and lumpectomy was
done. In second case, 50-year-old female presented with left parotid swelling associated with mild pain.
Pleomorphic adenoma was suspected clinically and lesion was excised. Histologically, both cases showed
hypocellular and hypercellular areas suggestive of schwannoma. Further, the diagnosis was confirmed with
S-100 immunohistochemistry marker. Thus, schwannoma should be considered as one of the differential
diagnosis for spindle cell lesion in breast and parotid swelling.