Hardly any... once it develops, it is too late...
But the only single symptom is a painless lump... 
You may also noticed other constitutional symptoms such as loss of
weight, loss of appetite and early morning vomiting.
The lump usually progresses to become larger over time, and without
adequate assessment and intervention, it may burst to form an
ulcer, which might be too late, and requires a total removal of the
whole br.east affected.
