Breast Cysts: Are They Harmful or Just Benign? - Surgery

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Blister on the breast?


Hello, Doctor Yu.
I felt something in my breast and went for a breast ultrasound.
The report showed a benign cyst, and the doctor said it was nothing to worry about, but didn't explain further.
I would like to ask why there are cysts? Is it really not a concern? Will it not be treated? Can cysts change over time?

56, 20~29 year old female. Ask Date: 2012/09/19

Dr. Yu Mingchang reply Surgery


Hello^^ The so-called breast cysts refer to benign fibrocystic breast disease, which is not the same as the typical blisters one might imagine.
More than 90% of these are benign changes that do not require treatment; annual follow-up with ultrasound is sufficient.
Thank you!!

Reply Date: 2012/09/19

More Info


Breast cysts are fluid-filled sacs that can develop in the breast tissue. They are quite common, especially in women aged 30 to 50, and are generally considered benign, meaning they are not cancerous. The presence of cysts can be attributed to hormonal changes, particularly those related to the menstrual cycle. During the menstrual cycle, hormonal fluctuations can lead to the formation of these cysts, which may vary in size and number.

In your case, the ultrasound report indicates that the cysts are benign, which is reassuring. The term "benign" means that the cysts are not associated with cancer or any malignant changes. It is important to note that while breast cysts can be concerning, especially if they are new or have changed in size, the majority of cysts do not pose any health risks and do not require treatment unless they cause discomfort or other symptoms.

Breast cysts can be classified into two types: simple and complex. Simple cysts are typically round or oval, have smooth edges, and are filled with clear fluid. They usually do not require any intervention. Complex cysts, on the other hand, may have solid components or irregular shapes and may require further evaluation to rule out any potential issues. In your case, since the report indicates benign cysts, it is likely that they are simple cysts.

As for your concerns about whether these cysts could change or become problematic, it is essential to understand that while cysts can fluctuate in size, they generally remain benign. Regular monitoring through follow-up ultrasounds, as suggested by your doctor, is a standard practice to ensure that there are no changes in the cysts over time. If a cyst becomes painful, grows significantly, or exhibits any unusual characteristics, your healthcare provider may recommend further evaluation or treatment, such as aspiration (draining the cyst) or, in rare cases, a biopsy.

In summary, breast cysts are common and usually harmless. They are often a result of hormonal changes and do not typically require treatment unless they cause discomfort. Regular follow-up with your healthcare provider is essential to monitor any changes. If you have any further concerns or experience new symptoms, do not hesitate to reach out to your doctor for additional guidance. It's always better to be proactive about your breast health, and your healthcare provider can help you navigate any uncertainties you may have.

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