Fibroadenoma: When to Be Seen
A fibroadenoma is a common benign breast lump made of glandular and connective tissue. It is most often found in women in their 20s and 30s. Fibroadenomas typically feel smooth, firm and moveable — sometimes described as a 'breast mouse'. They are not cancer, but should be confirmed by assessment.
What is a fibroadenoma?
A fibroadenoma is a benign overgrowth of the glandular and supporting tissue of the breast. They are influenced by hormones, which is why they are common in younger women and can change during pregnancy or with the menstrual cycle.
How it is diagnosed
Diagnosis uses triple assessment — examination, ultrasound (and mammogram if you are older), and usually a core biopsy to confirm. Once confirmed, most fibroadenomas are simply monitored. Book via the one-stop clinic.
When to seek medical advice
See a doctor promptly — or call 999 if you feel acutely unwell — if you notice any of the following:
- A lump that is growing quickly
- A lump that feels hard, fixed or irregular
- Skin or nipple changes
- A lump larger than around 3 cm
- Uncertainty about the diagnosis
Most breast changes are not cancer. But any new or persistent change should be assessed. Our one-stop breast clinic offers same-day specialist assessment.
Frequently asked questions
Is a fibroadenoma cancer?
No. A fibroadenoma is a benign (non-cancerous) breast lump. Having one does not meaningfully increase your risk of breast cancer. It still needs to be confirmed by assessment.
Do fibroadenomas need to be removed?
Usually not. Most are simply monitored. Removal is considered if a fibroadenoma is large, growing, causing symptoms, or if the diagnosis is uncertain.
Will it go away on its own?
Some fibroadenomas shrink or disappear over time, particularly after the menopause. Others stay the same or slowly grow.
Related information
Sources
Worried about a breast symptom?
Book a same-day one-stop appointment with Mr Debashis Ghosh, or call our team in confidence.