Fig. 2From: Intradural extramedullary cervical metastasis from Merkel cell carcinoma: a case report and literature reviewHistopathological features. A Monomorphic proliferations of small cells with vesicular nuclei. B Positive cytokeratin 20 (CK20) expression on the membrane and paranuclear site. C Positive expression of chromogranin on the membrane. D High index of proliferation with Ki67 expressionBack to article page