Hi Paul,
Your English is great! Ik woon zelf in Amsterdam, al 23 jaar. Waar woon jij?
I'm sorry to hear about these two very scary health problems you're facing, but I trust your doctor when she says take care of the heart problem first. You had the bladder tumor removed, you will see in two weeks the state of things in the bladder. If there is still some tumor left, it can be removed again. A stage T1 tumor would give you enough time to have the heart surgery first. Maybe you won't need further treatment in the bladder. There are treatments that are relatively easy to take. More information about treatments can be found in the section for superficial bladder cancer here:
blcwebcafe.org/superficialblca.asp
It's wise to learn the territory a bit, doctors tend to share as much information as they think you want to know, so if you you want all the details you really must push. It's a bit better here in Holland, I think. I'm a breast cancer survivor, going to AVL in Amsterdam, it's a good institution, the best. In fact if you can follow up there for your bladder cancer, after the heart surgery, you would be in the best hands.
Take care, and keep us posted.
Wendy