I was diagnosed with testicular cancer. My situation was very fortunate, in that at the time I was diagnosed, the malignancy was within days of beginning to spread.
When I first found out about the cancer, I was devastated. My mother had passed away two years prior from cancer and several of my aunts and uncles had died with one form or another. I was sure that it might be too late to get it all. And if I lived, I thought that would be the end of my ability to father a child. Fortunately, I had some very supportive friends who stuck with me from the day I found out about the cancer all the way through the surgery and even through the followup radiiation treatments.
Fortunately, I ended up being wrong on both counts. I have a ten and a half year old son and I am still alive and kicking, as of today.