Updated June 13, 2014.

Definition:

A benign (non-cancerous) breast tumor that is made of glandular and fibrous breast tissue. Fibroadenomas are very common in premenopausal women, and they can occur in groups. These lumps feel solid and smooth, and are usually not troublesome.

Pronunciation: FI-bro-a-di-NO-ma

Common Misspellings: fibroadnoma, fiberadenoma

Examples:

Fibroadenomas show up on your mammogram as round or oval smooth-edged masses.

An ultrasound exam can help distinguish a fibroadenoma from other breast lumps, because it can produce a clear image with a smooth outline. A needle biopsy of a fibroadenoma will give you the clearest diagnosis.