Polypoid Carcinoma of the Oropharynx with Stromal Ossifying Myofibroblastic Proliferation: A Case Report and Literature Review

<div><i>Immunohistochemistry</i>. (a) Intense positivity for cytokeratin (clone AE1-AE3) of atypical elements in subepithelial site (40x). (b) Total negativity for cytokeratin (clone AE1-AE3) in the spindle elements of the core. (c) Vimentin positivity in the spindle component. (d) <i>α</i>-Smooth muscle actin positivity.</div>

Case Reports in Pathology

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Figure 4

Figure 4: Polypoid Carcinoma of the Oropharynx with Stromal Ossifying Myofibroblastic Proliferation: A Case Report and Literature Review 