Fig. 2From: Upper lip metastasis of sarcomatoid carcinoma of the lung – an unusual site of disease: a case reportSarcomatoid non-small cell lung cancer metastasis to upper lip. a A 2.1 cm anteroposterior × 3.6 cm transverse × 3.8 cm craniocaudal rim-enhancing mass involving the right upper lip with mild surrounding inflammatory changes. b Scant benign superficial epithelium with an overriding subepithelial spindle and epithelioid cell neoplastic population with intermediate-sized nuclei with some degeneration and moderate amounts of pink cytoplasm, scattered multinucleated giant cells, and small intratumoral foci of necrosis (100×). c Immunohistochemical staining with scattered MNF116-positive cells (100×)Back to article page