I used to work along side someone who worked on this kind of problem. The issues was then and probably still is that there isn’t enough good and labeled training data. You can’t just hoover up every breast cancer image in the world, they’re locked away on servers in hospital basements and belong to the patients (at least in the US) and every country has different laws about using this stuff for research, much less a commercial system. Some national health services have tried this with their own data and results have so far been unimpressive.