Can Fibroadenomas Affect Pregnancy? What You Need to Know - Surgery

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Hello Doctor: I live in Pingtung.
At the age of 33, I discovered a hard lump in my breast during a self-examination.
I went to the hospital for an examination, and after a breast ultrasound, it was found that I have three fibroadenomas.
The doctor said they are multiple fibroadenomas and benign, advising me to monitor them every six months to a year without the need for surgical removal.
However, I am married and planning to get pregnant.
Will hormonal stimulation during pregnancy negatively affect my fibroadenomas? Would it be better to have the fibroadenomas surgically removed before pregnancy?

Xiao Jie, 30~39 year old female. Ask Date: 2022/08/15

Dr. Yu Mingchang reply Surgery


Hello: It will not affect the follow-up.

Reply Date: 2022/08/15

More Info


Fibroadenomas are benign breast tumors that are most commonly found in women of reproductive age. They are often influenced by hormonal changes, which raises concerns for women who are planning to become pregnant. In your case, since you have been diagnosed with multiple fibroadenomas and are considering pregnancy, it is important to understand how these growths may interact with the physiological changes that occur during pregnancy.

During pregnancy, the body undergoes significant hormonal changes, particularly increases in estrogen and progesterone levels. These hormones can stimulate the growth of fibroadenomas, potentially leading to changes in their size or tenderness. However, it is crucial to note that while fibroadenomas may grow during pregnancy, they are generally not associated with any adverse effects on pregnancy outcomes or fetal development. The presence of fibroadenomas does not typically pose a risk for complications such as miscarriage or preterm labor.

In most cases, if a fibroadenoma is stable and has been monitored without significant changes, it is safe to proceed with pregnancy without surgical intervention. Many healthcare providers recommend continuing regular monitoring through breast examinations and imaging studies, such as ultrasounds, to ensure that the fibroadenomas remain benign and stable. If you notice any changes in the size or characteristics of the lumps during pregnancy, it is essential to consult your healthcare provider for further evaluation.

Regarding your concern about whether to have the fibroadenomas surgically removed before pregnancy, this decision should be made based on several factors, including the size and symptoms associated with the fibroadenomas, your personal health history, and your comfort level. If the fibroadenomas are causing significant discomfort or if there is uncertainty about their nature, surgical removal may be considered. However, if they are asymptomatic and stable, many healthcare providers may advise against surgery, as the risks associated with surgery and anesthesia during pregnancy can outweigh the benefits.

It is also important to consider that pregnancy itself can alter breast tissue, and many women experience changes in their breast density and structure during this time. After childbirth, breastfeeding may also influence the appearance and size of fibroadenomas. Therefore, some women find that their fibroadenomas become less of a concern postpartum.

In conclusion, while fibroadenomas can be influenced by hormonal changes during pregnancy, they are generally benign and do not pose significant risks to pregnancy or fetal health. Regular monitoring and communication with your healthcare provider are key to managing any concerns. If you are considering surgery, it is advisable to discuss this thoroughly with your healthcare provider to weigh the risks and benefits in the context of your specific situation. Ultimately, the decision should align with your health goals and family planning aspirations.

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