Merkel Cell Carcinoma of the Axilla and Adrenal Gland: A Case Report with Imaging and Pathologic Findings

Figure 5

Microscopic findings of the right axillary mass showed diffuse sheets of basophilic tumor cells ((a) HE ×200) with large and pale staining nucleus and tiny nucleoli ((b) HE ×400). Lymphovascular invasion is an almost constant histological finding ((c) HE ×400). Characteristic paranuclear dot-like staining of CK20 is specific for MCC ((d) CK20 ×400).

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