In breast cancer, abnormal genes cause breast cells to grow uncontrollably and not die off as they normally would.
If these cells grow slowly and don't invade other tissues, they cause benign tumors. These are lumps that are not usually considered dangerous to health.
When abnormal cells grow at a more rapid rate and begin to invade surrounding tissues, they form cancerous tumors. These lumps pose a serious risk and can spread, creating new tumors throughout the body.
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| When breast cancer first appears, it can cause a wide range of different symptoms. Always seek medical attention if in doubt about possible breast symptoms. Breast cancer can also affect men. |
Source: MedicalNewsToday
