Fig. 1.

Illustrated pictures presented comprised entirely of malignant melanoma cells (Red star and Red arrows) underlying the begnin bladder mucosa (Blue star and Blue arrows) (Separated by basement membrane – the green discontinuous line) (A & B of HE stain, C & D of IHC stain with positive HMB-45, 40×). A and C images are the total specimens, manification of 3.5×. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)