Non-Painful Breast Lumps: What Could They Be? - Breast and Thyroid

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A mosquito bite-like swelling on the side of the breast?


I am 24 years old and have noticed a bump on the side of my breast that resembles a mosquito bite, approximately one centimeter in size.
It feels superficial to the touch and is not painful or itchy.
It has been present for less than a month.
Could this be classified as a small tumor, doctor?

Ms. Zhang, 20~29 year old female. Ask Date: 2021/07/15

Dr. Yuan Tianmin reply Breast and Thyroid


It may be advisable to go to a specialized clinic for an ultrasound examination.

Reply Date: 2021/07/15

More Info


When it comes to breast lumps, especially in young women like yourself at 24 years old, it’s important to understand that not all lumps are indicative of serious conditions. The lump you described, which is about the size of a mosquito bite, superficial, and painless, could be one of several benign conditions.

1. Fibroadenomas: These are solid, non-cancerous tumors that are common in young women. They are usually round, firm, and can move slightly when touched. They are typically painless and can vary in size.

2. Cysts: Breast cysts are fluid-filled sacs that can develop in the breast tissue. They can be tender or painless and may fluctuate in size with your menstrual cycle. Cysts are usually benign and can be diagnosed through imaging studies like ultrasound.

3. Lipomas: These are benign tumors made of fat tissue. They are soft, movable, and painless. Lipomas can occur anywhere in the body, including the breast.

4. Intraductal Papillomas: These are small, wart-like growths in the ducts of the breast. They can sometimes cause discharge but are generally not painful.
5. Normal Breast Tissue Changes: Hormonal fluctuations can cause changes in breast tissue, leading to the formation of lumps that may not be harmful.

Given that your lump has been present for less than a month and is painless, it is less likely to be a cause for concern. However, it is crucial to have any new breast lump evaluated by a healthcare professional, particularly a breast specialist. They may recommend imaging studies such as a breast ultrasound or mammogram to assess the lump further.
In terms of management, if the lump is confirmed to be benign, regular monitoring may be all that is necessary. However, if there are any changes in size, shape, or if you start experiencing pain or other symptoms, it’s important to seek medical advice promptly.

In summary, while the lump you described is likely benign, it is essential to consult with a healthcare provider for an accurate diagnosis and peace of mind. Regular breast self-exams and awareness of your body are important practices for early detection of any changes that might require further investigation.

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