Figure 1

Small cell cancer of the urinary bladder. (a) The tumor invades into muscularis propria wall (hematoxylin staining, original magnification × 200). (b) Positive c-kit immunoreactivity (hematoxylin counterstain, original magnification × 200).
Small cell cancer of the urinary bladder. (a) The tumor invades into muscularis propria wall (hematoxylin staining, original magnification × 200). (b) Positive c-kit immunoreactivity (hematoxylin counterstain, original magnification × 200).