Likely testicular cancer age 21

My son is facing the possibility of testicular cancer. Hes had the orchiectomy which went well and is waiting for results this week. He had a clear ct scan and no blood markers were raised. He really doesnt want chemo, hes worried about the risks later on and the possibility of further chemo not being so effective. We really want to hear about people who have also been through this at a young age and any long term effects as he has his whole life ahead of him.