Instead of starting a new topic, I decided to reply to this as it is what I am experiencing. I donated a left kidney to my Dad, as I was told it was the preferred kidney. After the operation, the side of my left testicle was sore like I had been kicked. It was also swollen. I was told it was normal and would go away. Now, 5 years later, there is still some pain, but the swelling was much worse. The swelling seemed to get worse if I was on my feet or working in the heat. I was told it was a hydrocele and that I also had an inguinal hernia. It was suggested that the hernia was possibly allowing fluid from my abdomen to fill my testicle. I had both operated on at the same time. The next day, my testicle was as large as it had been. I had read it could take a couple of months for the swelling to go down after a hydrocelectomy. Three months later, I am still having swelling that increases depending on my activities. I went back to the surgeon, and he sent me in for another ultrasound. I was told by a nurse my hydrocele had returned an I would need another operation. I questioned this, and questioned why the size changed. She suggested that maybe lymphatic damage had occurred and said she would ask the surgeon. I just got a call back saying all they could do was try the operation again, and if it was lymphatic damage, then there was not much I could do. So I looked up lymphatic damage from kidney donation. Apparently it is common. So getting another hydrocelectomy is taking a chance that it will come right back. I will still have to stay out of work another for 4-6 weeks (I do physical work) not to mention more scar tissue which adds to the swelling. Very discouraging. Not sure how I will move forward on this. If I were about to donate a kidney, I would suggest the right kidney, less chance of long term problems.