Hi what is the symptoms of breast cancer?

What are the symptoms associated with breast cancer?
Feeling of painless , hard lumps inside the breast or increased hardness or thickness of the breast tissue
Breast secretions
blood secretion from the breast
Changes in both breasts
What causes breast cancer?
radiation
some drugs
family history
inherited genes like BRCA1,2
old age
How to Diagnose Breast Cancer?
Take a full history
Clinical examination of the breast
Mammography
Make a sonar image of the breast
Take a biopsy of the tissue and send it to the pathological laboratory