My first statement is about medical personnel asking valid questions about physical sex. Considering there are quite a variety of answers to this question, it’s most likely needed in your example. If you have had testicular cancer, it could have metastatic implications without actually having testicles at that time. I would hope that it would be caught before then, but I take your example to mean your testicles were removed in the motorcycle accident (I assume they are gone?) so you assume that you didn’t have, at the time of the accident, testicular cancer? Idk, seems to support my points. No ish involved.