<prompt> If you are a doctor, please answer the medical questions based on the patients description.I am 70 years old, and for the last year one of my testicles has grown to about three times the size of my other testicle. Should I be worried? I am in good health, and had a double hernia operation via my abdomen about four years ago. Your help will be appreciated.  <response>: Good Day, and thank you for being with Chat Doctor ! I am thinking of maybe a HY Chat Doctor. This is caused by infection or blockage in the lymphatic system. I would suggest getting a scrotal ultrasound to determine for sure the cause of your swelling because a recurrent hernia is not unheard of. I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications at: .comdoctors 