Unusual Breast Changes: What Could This Be? - Breast and Thyroid

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A cord-like structure has developed under the left breast?


Recently, I discovered a cord-like structure under my left breast.
It's not a blood vessel; it extends from the area near my lower rib cage to the side of my nipple.
I initially noticed it because of some pain, but after a few weeks, the pain has subsided, although the structure is still there.
Could this indicate a problem with my breast?

Mei, 20~29 year old female. Ask Date: 2005/10/08

Dr. Wu Jingtang reply Breast and Thyroid


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Reply Date: 2005/10/08

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When it comes to unusual changes in the breast, such as the appearance of a cord-like structure extending from the lower chest area to the area near the nipple, it is essential to approach the situation with a comprehensive understanding of breast anatomy and potential pathologies.
Firstly, the description of a "cord-like" structure could be indicative of several benign conditions. One possibility is the presence of a fibrous band or a thickened area of tissue, which can occur due to hormonal changes, particularly in relation to the menstrual cycle. Hormonal fluctuations can lead to changes in breast tissue, resulting in the formation of fibrous tissue or even benign cysts. These changes can sometimes be accompanied by pain or discomfort, which seems to align with your initial experience of pain before the structure became noticeable.

Another consideration is the possibility of a condition known as "ductal ectasia," where a milk duct beneath the nipple dilates, fills with fluid, and thickens. This can lead to the formation of a palpable mass or cord-like structure, and it may also cause pain or discomfort. However, this condition is more commonly associated with nipple discharge and changes in the skin of the nipple.

It is also important to consider the role of connective tissue in the breast. The breast is composed of glandular tissue, fat, and connective tissue, which can sometimes become more prominent or fibrous due to various factors, including age, hormonal changes, or even physical activity. This could lead to the sensation of a cord-like structure, especially if there has been any recent physical strain or changes in body weight.

While the pain has subsided, which is a positive sign, it is crucial to monitor the situation closely. Any persistent changes in the breast, especially if they are new or accompanied by other symptoms such as changes in skin texture, color, or the presence of a lump, should be evaluated by a healthcare professional. A clinical examination and possibly imaging studies, such as a mammogram or ultrasound, may be warranted to rule out any underlying issues, including benign tumors or, although rare, malignant conditions.

In summary, while the presence of a cord-like structure in the breast can often be attributed to benign changes related to hormonal fluctuations or connective tissue alterations, it is essential to remain vigilant. Regular self-examinations and awareness of any new symptoms are critical. If you notice any changes or if the structure persists, it is advisable to consult with a healthcare provider, preferably a breast specialist, who can provide a thorough evaluation and peace of mind. Early detection and intervention are key in managing breast health effectively.

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