There are many medical conditions that can present as a mass in the scrotum
. These include but are not limited to hernia
, hydrocoele (an acummulation of fluid in the tissue layers that encircle the testicle), benign cyst, infection, varicoele, and the most feared testicular cancer. From your description of physical findings, it sounds like this mass may be a varicocoele.
A varicoele is a dilation of the pampiniform plexus, which is made up of the veins that drain the testicle.