Fig. 2
From: Long lasting response with trabectedin monotherapy in relapsed metastatic mesenchymal chondrosarcoma

Histopathology of mesenchymal chondrosarcoma. a Low power picture of tumor showing malignant round cells admixed with islands of hyaline cartilage. b High power showing cells with high NC ratio and scanty cytoplasm admixed with lobule of hyaline cartilage showing increase cellularity. There are mitotic figures. c Immunostain for S100 showing nuclear positivity in Chondrocytes of hyaline cartilage. d Immunostain for CD99 showing membranous positivity in round cell component