“…On morphology, the differential diagnosis may include solid variant of adenoid cystic carcinoma, 4,6,13,17 highgrade mucoepidermoid carcinoma, 6,13,17 high-grade adenocarcinoma, 4,6,13,17 Merkel-cell carcinoma, 5,17 lymphoma, 5,13,17 and extrasalivary metastasis of small-cell carcinoma. 5,[21][22][23][24][25][26] Immunohistochemically, small-cell carcinoma of the salivary glands usually expresses at least one neuroendocrine marker 9 such as Leu 7, synaptophysin, chromogranin, or neuron-specific enolase, and shows cytokeratin staining, 9,10 often in a punctate or globular paranuclear pattern. 9,10 Staining with epithelial membane antigen 9 and vimentin 9 has also been reported.…”