You might not die if you leave that cancer alone, but you might get part of your colon removed, or get a colostomy bag, or get your anus surgically sewn shut ti

You might not die if you leave that cancer alone, but you might get part of your colon removed, or get a colostomy bag, or get your anus surgically sewn shut til death -all of which not necessarily changes your life expectancy. Looking for death vs no-death alone as an outcome for medical diagnosis/treatment is short sighted.