Journal of Medical Cases, ISSN 1923-4155 print, 1923-4163 online, Open Access
Article copyright, the authors; Journal compilation copyright, J Med Cases and Elmer Press Inc
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Case Report

Volume 10, Number 5, May 2019, pages 146-149

Parotid Gland Oncocytoma: A Rare Case and Literature Review


Figure 1.
Figure 1. Parotid ultrasonography shows a 20 mm in diameter well-circumscribed mass of the superficial lobe of the right parotid gland. The mass is hypoechoic.
Figure 2.
Figure 2. MRI in T1-weighted sequences (a) shows a hyposignal mass of the superficial lobe of the right parotid gland; with homogenous enhancement after gadolinium injection (b). The mass is slight hypersignal on T2-weighted sequences (c), and with a hypersignal on diffusion sequences (d).
Figure 3.
Figure 3. Sheets or trabeculae, patterns of monotonous large polygonal cells with well defined cell borders, deeply eosinophilic and granular cytoplasm (H&E, × 100).