case_images: PMC3349999_01
case_images: The epithelioid and sarcomatoid component of the tumor showing polygonal cells and spindle cells, respectively. There is focal appearance of osteosarcoma cells (hematoxylin-eosin, original magnification x400).
case_images: CRIM.UROLOGY2011-415675.001.jpg
case_images: PMC3349999_01_CRIM.UROLOGY2011-415675.001.jpg
case_images: fig1
case_images: The epithelial component was high-grade urothelial cancer, and the sarcomatoid element consisted of osteosarcoma and chondrosarcoma (Figure 1).