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Histomorphological features suggestive of HPV-associated carcinoma. a (Hematoxylin and eosin, 200×) nests and lobules of tumor cells with pushing borders. b (Hematoxylin and eosin, 200×) lymphoepithelial morphology. c (Hematoxylin and eosin, 200×) absence of stromal reaction. c (Inset) (hematoxylin and eosin, 200×) focal basaloid appearance. d (Hematoxylin and eosin, 200×) central necrosis
