Feb 6, - The prospect of finding a lump on your breast is daunting, however getting to know your breasts and understanding which lumps are a sign of. Breast tissue naturally has a bumpy texture. Some women have more lumpiness in their breasts than others. In most cases, this lumpiness is no cause to worry. This type of lump may be a sign of breast cancer or a benign breast condition cyst fibroadenoma.