Merkel Cell Carcinoma of Left Groin: A Case Report and Literature Review
Figure 3
Merkel cell carcinoma. (a) Macroscopic examination of the resected mass showing a large, yellow-tanned, and lobulated mass. (b) H&E stain showing sheets of small blue cells with scant cytoplasm, irregular nuclei, mitoses, and individually necrotic cells. (c) H&E stain showing invasion of femoral lymph node by nests of neoplastic cells. (d) The neoplastic cells stain positive for CK20 in a perinuclear dot-like fashion. (e) The neoplastic cells stain positive for CD 56.
