On the left, the biopsy revealed sarcoma of the breast stroma with biomarkers positive for vimentin and negative for epithelial biomarkers, such as AE1-AE3 (pan cytokeratins) and HC (high-molecular-weight cytokeratin), actin and desmin (muscle biomarkers), S100 protein (nervous and melanocytic differentiation), and CD 31 and CD 34 (vascular biomarkers). Here, VIM is linked to sarcoma.