Fibroadenoma most commonly occurs in which demographic?

• A. Young females
• B. Postmenopausal women
• C. Men
• D. Prepubertal girls

Answer: (A)

Fibroadenoma is a benign breast lesion that grows in response to estrogen, so it most commonly appears during the reproductive years when breast tissue is developing and hormone exposure is highest. This makes adolescence through early adulthood the typical window for these tumors. After menopause, estrogen levels drop and these lesions become much less common, and they are rare in prepubertal girls or in men. Clinically, they present as a small, firm, well-defined, mobile lump in one breast. Therefore, the demographic most commonly affected is young females.