PMC8267018_01
Magnetic resonance imaging demonstrated enlargement of bilateral neck node of upper jugular, middle jugular, and parotid groups (arrow). These nodes lost their normal architecture and some showed necrosis center. The largest one measured 21 x 17 mm.
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Some of those showed necrosis center (Figure 1).
Results of pathology: Tumor cells are clustered, with round or oval nuclear, and unclear nucleoli. Mitosis activities in those cells are low with eosinophilic cytoplasm (arrow).
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They had large and pleomorphic nuclei with prominent nucleoli (Figure 2).
Results of immunohistochemistry: marker CK (+) sporadic, weak; marker desmin (+); marker CD56 (+); marker epithelial membrane antigen (+) weak; marker Oligo2 (-); marker PR (-).
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