I'm heartbroken. We found out he was FIV positive shortly after we got him, but that doesn't make the loss any easier. He was only 1.5 years old. Hold your cats close for me tonight.
Edit: I fell asleep, so I'm sorry that I didn't respond to everyone. I'm very thankful to everyone for the kind words and support.
Sorry to hear about your boy, however short is our time with them, we do our best to make their life enjoyable and while it is painful, they do love us back. So remeber and cherish of all the good times you two had.
My about 8 year old girl (had her for 4), got diagnosed with an aggressive cancer last week. Nothing we can do but let her enjoy all the luxuries of her short remaining life. I am sure she knows she is cherished and had her best life with us.
I'm sorry to hear. Do what you can for her, and try to make her remaining time with you memorable and comfortable.