Hi Court79
Chemotherapy does not cause permanent infertility in most men with testicular cancer although most men will be temporarily infertile following chemotherapy. In some men fertility may not recover, particularly those who have had very high doses of chemotherapy.
A man with one healthy testicle can still have a normal erection, produce sperm and father a child. Therefore, surgery to remove just one testicle does not make a patient impotent.
Also, if your partner had surgery to remove the lymph nodes this can cause infertility because it may interfere with the nerves involved in ejaculation. Some men may recover the ability to ejaculate without further treatment; others may be helped by medication. For many, though, it could be permanent.

Hope this helps


Alan (Midwife)