Fig. 1From: A rare metastatic mesenteric malignant PEComa with TSC2 mutation treated with palliative surgical resection and nab-sirolimus: a case reportGross, light microscopic, and IHC findings. AÂ Intra-operative gross photo of the tumor. BÂ Representative section of tumor consisting of fleshy surfaces with extensive necrosis and hemorrhage. H&E stain showing sheets of malignant epithelioid cells with granular eosinophilic cytoplasm, marked nuclear atypia, and prominent nucleoli, 4x (C) and 20x (D). Tumor cells show patchy positive staining for Melan-A (E), HMB-45 (F), desmin (G), and CD117 (H)Back to article page