Polymorphous Low-Grade Adenocarcinoma of the Tongue Base Treated by Transoral Robotic Surgery

<div>Immunohistochemistry of the tumor. Immunohistochemical analysis revealed that the tumor cells were strongly positive for cytokeratin 7 (a) and epithelial membrane antigen (EMA) (b). A focal staining pattern was shown for S-100 (c).</div>

Case Reports in Otolaryngology

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Figure 3: Polymorphous Low-Grade Adenocarcinoma of the Tongue Base Treated by Transoral Robotic Surgery 