What Is a Fibroadenoma?

A fibroadenoma is one of the most common benign breast tumors, particularly in young women. It is a solid, non-cancerous lump made up of glandular and fibrous breast tissue.

Fibroadenomas are typically found in women between the ages of 15 and 35, although they can occur at any age. While discovering a lump can be worrying, it’s important to know that fibroadenomas are not cancer and in most cases do not increase your risk of breast cancer.

Symptoms of Fibroadenoma

Fibroadenomas often have very characteristic features:

• A smooth, round or oval lump
• Firm but rubbery consistency
• Mobile under the skin
• Usually painless
• Can vary in size over time

Some fibroadenomas may grow slightly, especially during pregnancy or hormonal changes, while others remain stable or even shrink.

What Causes Fibroadenomas?

The exact cause is not fully understood, but fibroadenomas are strongly linked to hormonal activity, particularly estrogen.

They are more common:

• During reproductive years
• With hormonal fluctuations
• In women using hormonal therapy

This explains why they may change in size during different life stages.

How Are Fibroadenomas Diagnosed?

• Clinical Breast Examination
  Your specialist assesses the size, shape, and mobility of the lump.
• Breast Imaging
  Ultrasound is the first-line tool, especially in younger women.
  Mammography may be used depending on age.
  Fibroadenomas typically have a very characteristic appearance on imaging.
• Biopsy (if needed)
  If there is any doubt, a core needle biopsy confirms the diagnosis safely and accurately.

Do Fibroadenomas Need to Be Removed?

Not always. Many fibroadenomas can be safely monitored without surgery.

Observation is recommended when:

• The lump is small
• Imaging is clearly benign
• There are no symptoms

Removal may be considered when:

• The fibroadenoma is growing
• It becomes painful or uncomfortable
• It is large (giant fibroadenoma)
• There is uncertainty in diagnosis
• The patient prefers removal for peace of mind

Surgical removal is usually a minor procedure with excellent outcomes.

When Should You See a Specialist?

You should seek medical evaluation if:

• You feel a new breast lump
• A known fibroadenoma changes in size
• You are unsure whether a lump is benign
• You experience anxiety about the diagnosis

Early assessment ensures accurate diagnosis and reassurance.

FAQs

Is fibroadenoma a type of cancer?
No. It is a benign tumor and does not behave like cancer.

Can fibroadenomas disappear on their own?
Yes. Some fibroadenomas may shrink or completely regress over time.

Can I have multiple fibroadenomas?
Yes. Some women develop multiple fibroadenomas in one or both breasts.

Do fibroadenomas turn into cancer?
This is extremely rare. Most fibroadenomas remain benign throughout life. Complex fibroadenomas or those with concurrent proliferative disease in the adjacent breast parenchyma may have a modestly increased long-term risk of developing breast cancer elsewhere in the breast, but this risk is not due to malignant transformation of the fibroadenoma itself.

Bottom Line

If you have discovered a breast lump or have been diagnosed with a fibroadenoma, expert evaluation is essential.

About the Author

Dr. Annalisa Perego is a Breast Surgeon in Dubai specializing in benign and malignant breast conditions, early detection, and personalized women’s health care. She combines advanced medical expertise with a compassionate, patient-centered approach.