Oncocytes in Mucoepidermoid Carcinoma of the Palate: Diagnostic Challenges

Figure 2

(a) Low-power view showing neoplastic glandular epithelial cells (∗) separated from the overlying mucosal parakeratinized stratified squamous epithelium. Oncocytic cells (#) intermixed with the cellular elements of mucous, epidermoid, and intermediate cells (magnification 4x). (b) Tumour mass showing multiple large cystic spaces (magnification 10x). (c) Cystic spaces lined by mucous cells (magnification 40x). (d) Oncocytic metaplasia evidenced by the presence of oncocytes (magnification 10x). (e) Cells with granular eosinophilic cytoplasm arranged in an organoid/alveolar pattern and supported by thin fibrous connective tissue septa (magnification 40x).