A 24-year-old woman presents with a 2 cm firm, rubbery, mobile, well-circumscribed breast lump that has been present for 6 months. It is painless and has not changed with the menstrual cycle. Ultrasound shows a well-defined hypoechoic mass with smooth margins. What is the most likely diagnosis?

• A Fibrocystic change
• B Invasive ductal carcinoma
• C Phyllodes tumor
• D Fibroadenoma ✓

Explanation

Fibroadenoma is the most common benign breast tumor in women under 30. It classically presents as a firm, rubbery, mobile, well-circumscribed, painless lump with smooth margins on ultrasound. Phyllodes tumors are more common after 40 and tend to be larger and rapidly growing. Fibrocystic change is diffuse and cyclical, not a discrete mass. Carcinoma typically presents as a hard, irregular, fixed mass.

Reference: Bailey and Love's Short Practice of Surgery, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.