PMC4643465_01
Neck magnetic resonance imaging of the head and neck showing the right parotid lesion.
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A head and neck MRI showed an ovoid heterogeneous lesion, dependent of the right parotid gland of 27 x 28 mm, hypointense in T1 and isointense in T2 with well-defined borders and an area of hemorrhage in its interior (Fig. 1).
Superficial parotidectomy with preservation of the facial nerve.
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A superficial parotidectomy with identification and preservation of the facial nerve was performed (Fig. 2).
Superficial parotidectomy surgical specimen.
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The right parotid gland was extracted with a mass of approximately 4 x 4 cm (Fig. 3) and a No. 10 Blake drain was inserted.
Hematoxylin and eosin staining.
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The neoplastic cells were medium size, with predominant eosinophilic cytoplasm (Fig. 4).
Immunohistochemical study for S-100 protein.
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The immunophenotype was positive for epithelial membrane antigen (EMA), CK8/18, vimentin, S-100 protein (Fig. 5), and mammoglobin.