Diabetes and Bladder Cancer

This article shows a link between pioglitazone and Bladder Cancer.  It wasn't that fact that startled me it was the next bit  "Just over 10,000 people are diagnosed with bladder cancer every year and almost 5,000 die of it. About half die within five years of diagnosis."


That's not what I recollect at all about the disease as generally it can be treated well and any signs of progression and you can remover the bladder entirely - it just struck me that a 50% 5 year mortality rate was a bit high given the advances made in this.  I'd have thought 20% in 5 years maybe but 50% looks very worrying.  Mind you, the whole article looks to be written to a headline and when you look deeper into the article it starts to unravel a bit and the substance becomes diluted.  The other thing is whether the 5,000 who die of it are related to the 10,000 diagnosed or are they from the 40,000 diagnosed in the 4 years before? 


I'm not sure about the way things are reported any more - this seems to be a very alarming bit of information until you read the caveats and the "science" behind it.