Fig. 3From: Extra-gastrointestinal stromal tumor arising in the lesser omentum with a platelet-derived growth factor receptor alpha (PDGFRA) mutation: a case report and literature reviewHistological and immunohistochemical tumor findings. Hematoxylin and eosin (HE) staining showing spindle-shaped tumor cells (a). Positive immunohistochemistry for KIT (b), CD34 (c), and DOG-1 (d)Back to article page