Figure 1

UTROSCT (Case 1) with a striking retiform pattern composed of small papillae with hyalinized cores projecting into larger cyst (a) and clusters of Leydig-like cells (b). Irregularly branching, slit-like tubules were seen elsewhere. The tumor cells were strongly positive for calretinin (c). Melan-A immunoreactivity in Leydig-like cells is shown in (d).