2. Lump in the Breast
Of course, the symptom that most people hear about the most is to find a lump or a growth in the breast. This lump may be very small and soft, or it can feel like a hard knot in the tissue of the breast. However, sometimes lumps cannot be felt until cancer has developed into its later stages, which is why it is so important for women over 40 to have regular mammograms. Sometimes small growths can show up in a mammogram, when they are not large enough to be detected by a self-check for lumps in the breast.