I have previously visited a urologist regarding what I was told was a fluid filled cyst on the surface of my right testicle. This cyst is in the normally smooth area and feels like it is hard and about the size of a pea. When I have examined myself, it's steadily gotten a very little bit bigger and does feel like it goes into the testicle itself. My question is, what kind of cyst is this? Is this something that could turn cancerous? Is surgery an option to remove this?