Lance Armstrong... greatest doper there was or ever will be

I've heard a lot of people say that recently and I think it's pretty low. "Even his cancer was his own doing!"

There is strong evidence that steroid abuse can cause cancer.

It's speculation at best, with fuck all evidence.

There is circumstantial evidence to suggest that the detection of his cancer was affected by doping / masking / deceit.

I don't know how circumstantial it is. If the UCI were testing him properly in the mid 90's they would have detected the abnormal testosterone levels caused by his cancer. Either they weren't testing properly or they were covering up the results - his cancer would have been detected sooner.