My 19-year-old son has lost both his testicles over a period of about three years after being kicked in the groin at age 11. His first symptoms were swelling of the scrotum. He was seen in the ER and an unltrasound was performed. The ultrasound showed that there was no torsion and the testicles were getting blood. He experienced these symptoms off and on, and each time ultrasounds were performed with no diagnosis. Eventually, both testicles died, and we were not given any explanation as to why this happened. What can cause the testicles to die in an adolescent? Why would they appear normal and then just die?