Sections show a malignant tumor composed of nests, trabeculae and short cords of small-to-intermediate sized basaloid cells with scant eosinophilic cytoplasm, a high nuclear-to-cytoplasmic ratio, hyperchromatic ovoid nuclei and inconspicuous nucleoli. Peripheral palisading of tumor cells and foci of abrupt keratinization/individual cell keratinization are present. Surrounding stroma shows desmoplastic reaction. Focal tumor necrosis is identified. Focal perineural invasion is noted.
Nasal ulcerative mass extending to Rt. side.
Skin ellipse measured 1.7x1.4x0.6 cm, showing ulcerated mass measured 1.2x1 cm.
Nasal ulcerative mass, biopsy: