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[edit] 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.

[edit] Imaging Findings for Fibroadenoma

Popcorn

[edit] Mammogram

• 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.

[edit] US

• 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.

[edit] Images

Patient #1

[edit] See Also

• Complex fibroadenoma
• Phyllodes tumor

[edit] External Links

• Goldminer: Fibroadenoma

[edit] 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.