presumably if they're seeing a cancer worthy of a biopsy the risk justifies cutting in there and checking
yeah there is a risk you get an infection but pancreatic cancer will kill you dead, and is no joke.
Is it cancer or just a 'cyst'? I'm not MD but my understanding is we often cannot tell without the biopsy but mostly it isn't cancer. Of course this is a generic discussion which could go either way depending on where they find something.