Do I have cysts or Cancer?

[schula3]

On the underside of my penis, where it begins to enter my body, there are two B-B sized chunks about 1/2 inch apart. The first one developed about two years ago and a second one has developed since. They have now stopped growing. There is no pain when I touch or pinch them but they are as hard as a rock. Can anyone tell me what they are.

Thanks,

Adam