Figure 4From: Pancreatic metastasis of Merkel cell carcinoma and concomitant insulinoma: Case report and literature reviewMerkel cell carcinoma – primary tumor. A, B: Hematoxylin and eosin staining. A. Lower magnification showing intravasal tumor cells. B: Monomorphous tumor cells, pale staining nuclei, many mitotic figures. C: Strong cytokeratin 20 staining. Insert: Intravasal cytokeratin 20-positive tumor cells. D: Weak chromogranin A stainingBack to article page