Spermatoceles are also known as spermatic cysts. They are fluid-filled masses, often painless, and they grow near the testicles. They tend to be benign (not cancerous). These cysts are found near the top and behind the testicle, but are separate from the testicle. They can be smooth, filled with a whitish, cloudy fluid, and most often hold sperm. Their size can vary. If their size becomes a bother or causes pain, then there are some ways to fix the problem. As a rule, they are not a serious medical issue.
The male reproductive tract handles the growth, maturation and delivery of sperm. Faults in the male reproductive tract can cause a mass to grow. If a mass forms in the scrotum, it may mean nothing or it could be a sign of something serious. A set course of action is needed to learn the nature of the mass and the best treatment. For example, if the mass is testicular cancer, it is a source of great concern and requires action. Other masses, such as varicoceles, can cause pain or harm reproductive function. Spermatocele masses are not cancerous, and do not increase your risk of testicular cancer, but they may be a nuisance.