Abstract
Mucoepidermoid carcinoma is the most common malignant tumor of the salivary glands and represents 5% of all neoplasms of the head and neck. The main risk factors reported are genetic disorders, radiation, and smoking. A 30-year-old woman presented with a painless swelling in the hard palate region that evolved over a period of 5 months. The lesion was found between the premolars and was an ulcerated nodule measuring about 5 mm in diameter. On extraoral examination, no lymph node changes were found. Tomography revealed a hypodense area with poorly defined margins. To determine the diagnosis, an incisional biopsy was performed, and the immunohistochemical report was positive for proteins CK-7, CK-8, CK-14, periodic acid-Schiff stain (PAS) PAS-clusters of differentiation (CD) and negative for acute myeloyd leukemia (AML) and vimentin, confirming the diagnosis of salivary gland neoplasm. The patient was referred to an oncology center.
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