Most of my reading has also indicated that Leydig cell tumors are usually benign. However, as other have suggested, having an evaluation by Einhorn or another center of excellence would definitely be a great idea. Very few doctors see TC, and Leydig cell tumors are even more rare, so you want to find someone who knows what they're looking at.
Right I/O 4/22/1988
Left I/O 9/17/2003
Tho' much is taken, much abides; and though we are not now that strength which in old days moved earth and heaven; that which we are, we are; one equal temper of heroic hearts, made weak by time and fate, but strong in will; to strive, to seek, to find, and not to yield.