Breast cancer is cancer that develops in breast cells. Typically, the cancer forms in either the lobules or the ducts of the breasts. This type of cancer can occur in women and rarely in men.
Signs and symptoms of breast cancer
In its early stages, breast cancer may not cause any symptoms. In many cases, a tumour may be too small to be felt, but an abnormality can still be seen on a mammogram.
If a tumour can be felt, the first sign is usually a new lump in the breast that was not there before. However, not all lumps are cancer.
Each type of breast cancer can cause a variety of symptoms. Many of these symptoms are similar, but some can be different. Symptoms for the most common breast cancers include:
- A breast lump or tissue thickening that feels different from surrounding tissue and is new
- Breast pain
- Red or discolored, pitted skin on the breast
- Swelling in all or part of your breast
- An unusual nipple discharge other than breast milk
- Bloody discharge from your nipple
- Peeling, scaling, or flaking of skin on your nipple or breast
- A sudden, unexplained change in the shape or size of your breast
- Newly inverted nipple
- Changes to the appearance of the skin on your breasts
- A lump or swelling under your arm
If you have any of these symptoms, it doesn’t necessarily mean you have breast cancer. For instance, pain in your breast or a breast lump can be caused by a benign cyst.
Still, if you find a lump in your breast or have other symptoms, contact your doctor for further examination and testing.


Thank you for sharing this clear and informative overview. It’s so important to have accessible resources that explain the basics, as understanding the condition is the first step for so many people. I particularly appreciated the section on the different types, as that’s an aspect I didn’t fully grasp before.
Thank you for sharing this clear and informative overview. It’s so important to have accessible resources that explain the basics without being overwhelming. I especially appreciated the section on the different types, as that’s something I realized I didn’t fully understand before.
Thank you for sharing such a clear and informative overview. It’s so important to have accessible resources that explain the basics without being overwhelming. Your point about early detection being key really resonates—it’s a message that can’t be repeated enough.
Thank you for sharing this clear and informative overview. It’s so important to have accessible resources that explain the basics without being overwhelming. I particularly appreciated the section on the different types, as that’s something I realized I didn’t fully understand before.
Thank you for sharing this clear and informative overview. It’s so important to have accessible resources that explain the basics without being overwhelming. This is a helpful starting point for anyone beginning to learn about this topic.
Thank you for sharing this clear and informative overview. It’s so important to have accessible resources that explain the basics, as understanding the condition is the first step for so many people. I particularly appreciated the section on the different types, as that’s an area I realized I didn’t know much about.
Thank you for sharing this clear and informative overview. It’s so important to have accessible resources that explain the basics without being overwhelming. My family has been touched by this disease, and understanding it better is the first step for so many people.
Thank you for sharing this clear and informative overview. It’s so important to have accessible resources that explain the basics without being overwhelming. This is a helpful starting point for anyone who has recently been diagnosed or is supporting a loved one through their journey.
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