Most breast masses are found by the patient or a primary care provider,[12] and commonly indicate a
macrocyst (clinically evident cyst), fibroadenoma, prominent areas of fibrocystic change, fat necrosis or cancer.[1]
The differentials of juvenile fibroadenoma include low-grade phyllodes tumor, virginal hypertrophy, and rarely lipoma, hamartoma, breast abscess,
macrocyst, adenocarcinoma, and pseudoangiomatous stromal hyperplasia.