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Signet-ring cell carcinoma presenting in the uterine cervix is an uncommon neoplasm. It is usually a metastasis from a primary gastric tumor; only rarely, cervical involvement is the first(More)
Merkel cell carcinoma (MCC) and primary cutaneous Ewing sarcoma/primitive neuroectodermal tumors (PCES/PNET) pose a challenging morphologic differential diagnosis. Approximately 90% of Ewing(More)