Fig. 2
From: Infiltration of thyroid papillary cancer tissue with myeloid leukemic cells: a case report
Blastic cell infiltration in FVPTC. a FVPTC with focal anaplastic differentiation areas (H.E. × 200). The star side of the red line consists of anaplastic cells, and the other side is the FVPTC part. b Anaplastic cells (H.E. × 400). c Blastic cell infiltration between follicles (H.E. × 400). Arrow: blastic cell groups. d Immunohistochemical staining of follicular cells and anaplastic cells showing diffuse strongly nuclear positive for TTF-1 (× 400). Arrow: anaplastic cell. e Immunohistochemical staining of blast cells showing diffuse, strongly cytoplasmic positive for CD34 (× 400). f Immunohistochemical staining of blast cells showing focally strongly cytoplasmic positive for HLA-DR (× 400)