What are the Early Signs of Breast Cancer?

Breast cancer is a disease in which abnormal breast cells grow out of control and form tumours. If left unchecked, the tumours can spread throughout the body and become fatal.

In 2020, there were 2.3 million women diagnosed with breast cancer and 685 000 deaths globally. 

Early on, a person may notice a change in their breast when they perform a monthly breast exam or when minor abnormal pain doesn’t seem to go away.

Early signs of breast cancer to look for include:

• changes in the shape of the nipple
• breast pain that doesn’t go away after your next period
• a new lump that doesn’t go away after your next period
• nipple discharge from one breast that’s clear, red, brown, or yellow
• unexplained redness, swelling, skin irritation, itchiness, or rash on the breast
• swelling or a lump around the collarbone or under the arm

A lump that’s hard with irregular edges is more likely to be cancerous.

Later signs of breast cancer include:

• retraction, or inward turning of the nipple
• enlargement of one breast
• dimpling of the breast surface
• an existing lump that gets bigger
• an “orange peel” texture to the skin
• poor appetite
• unintentional weight loss
• enlarged lymph nodes in the armpit
• visible veins on the breast

Having one or more of these symptoms doesn’t necessarily mean you have breast cancer. Nipple discharge, for example, can also be caused by an infection. See a doctor for a complete evaluation if you experience any of these signs and symptoms.