There are many conditions aside from cancer that may cause testicular enlargement. For example, a varicocele, enlarged veins in the scrotum, typically affects the left side, feels much like a "bag of worms". Hydroceles, if the scrotum is full of clear fluid it can be easily demonstrated by shining a flashlight through the enlarged portion and it becomes transilluminated. Inguinal hernias also may cause scrotal enlargement. Regardless of whether the symptoms you are experiencing are from a benign disorder as the above mentioned examples or related to a malignant origin, I would strongly suggest an evaluation by your physician.
Theresa Jones, RN