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Nasopharyngeal mass biopsy reveals diffuse infiltrate of large atypical cells with variably eccentric neuclei, ampophilic cytoplasm, prominent nucleoli, and occasional uninucleated forms (a), that are CD138 positive (b), kappa restricted (c), MUM-1 positive (d), EBER negative (e), and a Ki-67 overall of 60% (f).
