by the fact that 99% of ---in situ ductile carcenoma--- goes nowhere left UNTREATED.
the fact that it IS insitu by the time it's detected means your body IS controlling it.....tho it didn't stop mayo from operating on my 83 year old mom...TWICE!...look up the chances of dying from from the sedatives used in surgery on an 83 year old.....only by the skin of my teeth did i keep them from chemoing her.....BUT mayo collected $43,000 dolars---the REAL reason...
this is analagous to the fact that all men have some cancer cells in their prostate by the time their 30. yet most never have blown prostate cancer.
i suppose we should go on a fishing expedition to find ALL these men and remove their prostate, chemo them and maybe even cut off their testicles(common treatment for pros. cancer to remove all testosterone)
women like our soon-to-be supreme court member would no doubt support this.