An Overview of Breast Cancer

Medically Reviewed by Nusayba A. Bagegni, MD
Written by Vanessa LeongJan 2, 20243 min read
Breast Cancer Pink Ribbon

Source: Shutterstock

Breast cancer is a disease where abnormal cells in the breast tissues grow in an uncontrolled manner. Normal cells go through a life cycle of division and reproduction and eventually die after a period of time or when they are damaged beyond repair. However, these abnormal or damaged cells divide and grow uncontrollably, eventually forming a malignant (cancerous) tumor that can spread and invade surrounding tissue.

Schematic of Normal Cell vs Cancer Cell Division

Schematic of normal cell versus cancer cell division. Source: Avid Khamenehfar (2015)

Breast cancer is a type of cancer that originates from cells in the breast. The most common type of invasive breast cancer starts either in the milk duct (called invasive ductal cancer) or in the milk sac (called invasive lobular cancer).

Learn more: Exploring the Different Types of Breast Cancer.

Although it is more common in females, males can also develop breast cancer. If left undetected and untreated, it can cause cancerous cells to spread to other areas of the breast and even to other parts of the body, leading to severe consequences.

Learn more: Understanding and Addressing Breast Cancer in Men.

Non-cancerous breast conditions

It is essential to understand that not all breast tumors, growths or lumps are malignant. Most growths found in the breast are benign (non-cancerous) and are very common, particularly in females.

Discovering a lump or growth in your breast can be concerning. However, it's essential to know that various benign conditions can cause these changes. While the exact causes of these conditions are not fully understood, they may be related to factors such as a family history or hormonal changes during puberty, menstruation, pregnancy and/or lactation.

Benign tumors do not spread outside the breast and are often not life-threatening. The lumps may grow, shrink, or disappear over time, depending on the condition. But some may become malignant if they have abnormal and complex characteristics. In some circumstances, it can also be challenging to differentiate between malignant and benign tumors.

Learn more: Non-Cancerous Breast Conditions: What You Need to Know.

Early detection

That's why it is crucial to seek medical attention immediately if you notice any unusual changes in your breast. It is normal to feel worried or scared, but it is always better to take precautions and get a professional medical opinion. Remember that early cancer detection can make all the difference in your treatment and outcome. So, please do not hesitate to seek a medical professional if you have any concerns.

Learn more: Early Detection of Breast Cancer: What You Need to Know.

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This article has been medically reviewed and fact-checked to ensure our content is informed by the latest research in cancer, global and nationwide guidelines and clinical practice.

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