. Treatment started asap, no time for freezing of sperm, but he was young 23, and chances were reported to be high 85% that everything would be fine. after one cycle we tried to freeze sperm, but they found none, which they seemed a bit shocked by. he was on cisplatin which was the concern. now, many years later (7), he had a semen analysis done, and no sperm was found. I've been on a lot of forums - but no one talks about cancer and the affects of the medications experienced. we're on a wait list for a fertility clinic, but i'm wondering if anyone has experienced anything like this? - and if so, did the sperm return, or were they able to find any sperm in the testes