Fig. 3From: Unclassified mesenchymal sarcoma with NTRK1-KHDRBS1 gene fusion: a case report of long-term tumor-free survival with crizotinib treatmentBiopsy results showing diffused dense tumor cells, with obvious medium-to-severe atypia (hematoxylin and eosin stained; ×4 magnification). Biopsy results showing round or oval tumor cells with unclear boundaries, obvious nucleoli, and active mitosis (hematoxylin and eosin stained; ×20 magnification)Back to article page