HomeMedicine & HealthDiseases & Conditions (continued)What is Breast Cancer?
Medicine & Health·2 min·Updated Mar 14, 2026

What is Breast Cancer?

Breast Cancer

Quick Answer

It is a type of cancer that forms in the cells of the breasts. This disease can affect both men and women, but it is much more common in women.

Overview

Breast cancer occurs when cells in the breast begin to grow uncontrollably. Normally, cells grow and divide in a regulated way, but cancer cells ignore these controls and can form tumors. These tumors can be invasive, meaning they spread to nearby tissues, or non-invasive, where they stay within the ducts or lobules of the breast. There are different types of breast cancer, with some being more aggressive than others. For example, invasive ductal carcinoma is the most common type and starts in the milk ducts before spreading to other parts of the breast. Early detection through screening methods like mammograms can significantly improve the chances of successful treatment, making awareness and education about breast cancer crucial. The importance of understanding breast cancer extends beyond individual health; it impacts families and communities. Many people know someone who has been affected by this disease, and organizations often hold events to raise awareness and funds for research. For instance, the annual Breast Cancer Awareness Month in October encourages people to learn about the disease and support those battling it.


Frequently Asked Questions

Common symptoms include a lump in the breast, changes in breast shape or size, and unusual discharge from the nipple. Some people may also notice skin changes, such as dimpling or redness.
Breast cancer is usually diagnosed through a combination of physical exams, imaging tests like mammograms, and biopsy procedures. A biopsy involves taking a small sample of breast tissue to check for cancer cells.
Treatment options for breast cancer may include surgery, radiation therapy, chemotherapy, and hormone therapy. The choice of treatment depends on the type and stage of cancer, as well as the patient's overall health.