Abstract
Woman, 18, was referred for assessment of an asymptomatic nodule in the hard palate. At the School of Dentistry of USP, the lesion was described as a 3-cm solid nodule exhibiting telangiectasia. According to the patient, the lesion had been growing for 2 years. An incisional biopsy was immediately performed, with findings suggesting mucoepidermoid carcinoma. Histopathological analysis with eosin-hematoxylin staining and immunohistochemical reaction showed proliferating Schwann cells, sometimes arranged in palisades around acellular zones (Verocay bodies). The Schwann cells were positive for S100 protein. These features were compatible with the diagnosis of neurilemmoma, so the patient was referred to an oral and maxillofacial surgery service for appropriate surgical treatment.
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