Question: An 18 year old female presents with a lump in her breast. On examination, a single, firm, nontender, mobile mass is palpated. The most likely diagnosis is: An 18 year old female presents with a lump in her breast. On examination, a single, firm, nontender, mobile mass is palpated. The most likely diagnosis is: Galactocele Fibrocystic changes fibroadenoma Breast carcinoma