Discussion of Fibroadenoma
- Fibroadenomas are benign fibroepithelial tumors that develop in the lobules at the ends of mammary gland ducts.
- Composed of epithelium and stroma
- Fibroadenomas are the breast tumors most commonly found in adolescent girls and young women.
- When palpable, fibroadenomas are smooth, mobile and firm or rubbery.
- Multiple in 15% of cases
- Occasionally develop into very large masses and are then called juvenile giant fibroadenomas.
 Imaging Findings for Fibroadenoma
- At mammography, fibroadenomas appear as well-defined round, oval, or lobulated masses.
- The masses may be calcified, with the most common pattern of calcification being initial small peripheral dots that coalesce over time into coarser popcorn-shaped features.
- Fibroadenoma appears as a well-circumscribed elliptic mass that is either hypoechoic or isoechoic and has uniform echogenicity.
- Typically larger in the transverse than in the anteroposterior direction.
 See Also
 External Links
 References for Fibroadenoma
- Neeti B. Goel, Thomas E. Knight, Shilpa Pandey, Michelle Riddick-Young, Ellen Shaw de Paredes, and Ami Trivedi. Fibrous Lesions of the Breast: Imaging-Pathologic Correlation. RadioGraphics 2005 25: 1547-1559.