What a fibroadenoma is
The fibroadenoma is the most common benign tumour of the breast. It usually appears in younger women between the ages of 15 and 35.
Typically it is one to three centimetres across, rubbery, round and mobile — it slips easily between the fingers. It responds to hormones and can grow during pregnancy.
Does every lump have to be removed
No. When ultrasound and, where needed, a biopsy have confirmed a fibroadenoma that is small and not growing, a yearly ultrasound is enough.
The situations in which we recommend removal are limited:
- It is growing quickly
- Its size is uncomfortable for the patient
- The biopsy shows a suspicious finding (possible phyllodes tumour)
- Follow-up does not settle the patient’s anxiety
How the diagnosis is made
Examination
The consistency, mobility and borders of the lump are assessed by hand.
Ultrasound
The first choice at a younger age; it separates a solid lump from a cystic one.
Biopsy if needed
Where the appearance is suspicious, a small sample taken with a needle gives the definite diagnosis.