Breast fibroadenoma is a benign biphasic tumour composed of proliferating glandular and stromal elements. It is the commonest solid breast mass in women under 30 years and is strongly hormone-responsive. Most lesions are solitary and indolent, but multiple or rapidly enlarging variants require exclusion of phyllodes tumour or carcinoma. Painless, highly mobile noduleTypically 1–3 cm, firm, smooth, and well-circumscribed; the “slip sign”—easy displacement under the fingers—distinguishes it from malignant masses that adhere to surrounding tissue. Smooth, regular marginsPalpation reveals an ovoid or gently lobulated contour with a distinct edge; deep lesions may feel discoid when compressed against the chest wall.... Learn more