Fibroadenoma

Fibroadenoma

Gus Gibbons Emmick, MD

Basic Information

Definition

Fibroadenoma is a benign neoplasm of the breast that is characterized by localized proliferation of breast ducts and stroma.

Synonym

Biphasic tumor (i.e., tumor involving epithelial and stromal elements)

ICD-9-CM Code

217.00 Fibroadenoma of breast

Epidemiology & Demographics

• Fibroadenomas account for 70% to 95% of biopsied breast masses in adolescents.
• These neoplasms are uncommon in males.
• The incidence tends to peak in late adolescence (17 to 20 years), but fibroadenomas can occur up to 2 years before menarche.

Clinical Presentation

• Usually, the fibroadenoma is identified as an asymptomatic, incidental breast mass on examination by the patient or examiner. It is a nontender, rubbery mass, and it enlarges over several weeks or months.
• The mass does not vary significantly in size during menstrual cycles, but it can grow significantly with large fluctuations in estrogen, especially during pregnancy.
• Nipple discharge does not occur.
• The fibroadenoma usually slips easily under examining fingers.
• It is usually unilateral; 25% of cases are bilateral or multiple growths.
• Large lesions can produce symptoms that are associated with malignancy, including peau d’orange and enlarged superficial veins.
• Can be 3 to 4 cm at the time of discovery, and if not removed, it can grow up to 15 cm in diameter.
• It can be found in any quadrant, but it is more common in the upper, outer quadrants.
• It is more common in black girls.

Etiology

• Fibroadenoma is likely a hormonally dependent form of nodular hyperplasia.

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Jun 19, 2016 | Posted by in PEDIATRICS | Comments Off on Fibroadenoma

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