Primary Desmoplastic Melanoma of the Penis

Figure 1

Glans of penis at penectomy. Gross examination shows scattered, flat, dark-brown discoloration mostly on the glans dorsal surface (black arrow) and ill-defined firmness of the entire glans. Cross sectioning (picture in picture) locates the firmness of glans to an indistinct, white, ulcer-free tumor measuring approximately 1.5 × 1.3 cm on cut surface. The tumor (black arrowheads) has invaded into and through the urethra (white arrowheads: urethral opening and margin; single black arrow: tumor invasion).