poorly differentiated carcinoma


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  • Clinical

    • age 50-60s
    • rare, 2-3% of thyroid carcinomas
    • can arise from follicular or papillary carcinoma

  • Histology

    • nested pattern
    • mitosis
    • invasion

  • Stains

    • Pax8+
    • thyroglobulin, TTF1 weakly positive
    		•