Lumps in the breast – these can be cancerous. Get these seen by a doctor as soon as you can. Even a thickening or a hard knot in the breast tissue can also be dangerous.
Sudden discharge of bloody or clear liquid from the nipples is a warning sign of breast cancer.
Any signs of swelling, redness, pitting, darkness, warmth in the breasts can indicate breast cancer.
Any changes in the size, the shape, or the contour of the breasts can also indicate breast cancer.
If the nipples have retracted or indented, that can be a sign of breast cancer as well.
Another warning sign of breast cancer is the flattening or dimpling of the skin of the breast.
If the nipple has an itchy and or scaly rash, or a sore, or if there is pain in the breasts that do not go away, these could also be early warning signs of breast cancer.
Conduct a self examination of your breasts for any of these signs once a month starting at age 20. Please see the link below to find out how: http://www.bukisa.com/articles/37959_breast-cancer-self-examination
If you encounter any of the above mentioned changes in your breast, make an appointment with your doctor immediately.