Breast Lumps: Should You Worry About Cancer? - Surgery

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Breast lump


Hello Doctor, in recent days (during my menstrual period), I suddenly noticed a hard lump in my left breast, approximately 1.5 centimeters in diameter.
It has well-defined edges and is movable, and there is no pain when I press on it.
I would like to understand if this condition could be indicative of breast cancer.
Thank you for your assistance.

Kk, 20~29 year old female. Ask Date: 2023/05/25

Dr. Tang Yuxiong reply Surgery


Hello Ms.
Kk: Based on your description, the probability of breast cancer is less than 2%.
However, it is still recommended that if you have any concerns, you should undergo an ultrasound examination at a breast surgery clinic after your menstrual period ends.

Reply Date: 2023/05/25

More Info


When it comes to breast lumps, it’s important to approach the situation with a combination of caution and informed understanding. The discovery of a lump in your breast can understandably cause anxiety, especially with the prevalent concerns surrounding breast cancer. However, not all breast lumps are indicative of cancer, and many can be benign (non-cancerous) conditions.

In your case, you mentioned that the lump is approximately 1.5 cm in diameter, has clear edges, is movable, and does not cause pain upon pressure. These characteristics can be reassuring. Generally, breast lumps that are smooth, well-defined, and movable are more likely to be benign conditions such as cysts or fibroadenomas. Cysts are fluid-filled sacs that can develop in the breast tissue, while fibroadenomas are solid, benign tumors made up of glandular and connective tissue.

However, it is crucial to remember that any new lump should be evaluated by a healthcare professional. The fact that you are experiencing this lump during your menstrual period may also play a role, as hormonal fluctuations can lead to changes in breast tissue, including the formation of lumps that may resolve after your period ends.

Breast cancer can present in various ways, and while many lumps are benign, certain characteristics may raise suspicion. For instance, lumps that are hard, irregularly shaped, fixed to the surrounding tissue, or accompanied by other symptoms (such as changes in the skin, discharge from the nipple, or swelling) warrant further investigation.
Given your situation, it is advisable to schedule an appointment with a healthcare provider, preferably a breast specialist. They may recommend imaging studies such as a mammogram or ultrasound to further evaluate the lump. These imaging techniques can help determine the nature of the lump and whether a biopsy is necessary. A biopsy, which involves taking a small sample of tissue from the lump, is the definitive way to determine whether it is cancerous.

In terms of risk factors for breast cancer, it’s important to consider family history, age, and personal health history. If you have a family history of breast cancer or other risk factors, this may influence the urgency and type of evaluation needed.
For young women, breast cancer is less common, but it is not impossible. Regular self-examinations and awareness of your breast health are key components of early detection. The American Cancer Society recommends that women in their 20s and 30s perform breast self-exams and have clinical breast exams every three years. After age 40, annual mammograms are recommended.

In summary, while the characteristics of your lump may suggest it is benign, it is essential to seek professional evaluation to rule out any serious conditions. Early detection and diagnosis are crucial in managing breast health effectively. If you have any further questions or concerns, do not hesitate to reach out to your healthcare provider for personalized advice and support.

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