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TdT expression in Merkel cell carcinoma: potential diagnostic pitfall with blastic hematological malignancies and expanded immunohistochemical analysis
Merkel cell carcinoma is an uncommon aggressive primary cutaneous neuroendocrine carcinoma. Histologically, the differential diagnosis includes the ’small round cell’ tumor group, particularly metastatic small cell carcinoma and blastic hematological malignancies involving skin/soft tissues....