Disease: Fibroadenoma

Overview

Fibroadenomas (fy-broe-ad-uh-NO-muhz) are solid, noncancerous breast lumps that occur most often in women between the ages of 15 and 35.

A fibroadenoma might feel firm, smooth, rubbery or hard and has a well-defined shape. Usually painless, it might feel like a marble in your breast, moving easily under your skin when examined. Fibroadenomas vary in size, and they can enlarge or shrink on their own.

Fibroadenomas are among the most common noncancerous (benign) breast lumps in young women. Treatment might include monitoring to detect changes in size or feel, a biopsy to evaluate the lump or surgery to remove it.

Source: http://www.mayoclinic.com

Symptoms

Fibroadenomas are solid breast lumps that usually are:

  • Round with distinct, smooth borders
  • Easily moved
  • Firm or rubbery
  • Painless

You can have one or many fibroadenomas in one or both breasts.

When to see a doctor

In healthy women, normal breast tissue often feels lumpy. Make an appointment with your doctor if:

  • You detect a new breast lump
  • You notice other changes in your breasts
  • A breast lump you've had checked before has grown or otherwise changed and appears to be separate from the surrounding breast tissue

Source: http://www.mayoclinic.com

Causes

The cause of fibroadenomas is unknown, but they might be related to reproductive hormones. Fibroadenomas occur more often during your reproductive years, can become bigger during pregnancy or with use of hormone therapy, and might shrink after menopause, when hormone levels decrease.

Types of fibroadenomas

In addition to simple fibroadenomas, there are:

  • Complex fibroadenomas. These can contain changes, such as an overgrowth of cells (hyperplasia) that can grow rapidly. A pathologist makes the diagnosis of a complex fibroadenoma after reviewing the tissue from a biopsy.
  • Juvenile fibroadenomas. This is the most common type of breast lump found in girls and adolescents between the ages of 10 and 18. These fibroadenomas can grow large, but most shrink over time, and some disappear.
  • Giant fibroadenomas. These can grow to larger than 2 inches (5 centimeters). They might need to be removed because they can press on or replace other breast tissue.
  • Phyllodes tumor. Although usually benign, some phyllodes tumors can become cancerous (malignant). Doctors usually recommend that these be removed.

Source: http://www.mayoclinic.com

Diagnosis

During a clinical breast exam, your doctor will check both breasts for lumps and other problems. Some fibroadenomas are too small to feel, so they can only be discovered in imaging tests.

If you have a lump that can be felt (palpable), your doctor might recommend certain tests or procedures, depending on your age and the characteristics of the lump.

Tests to evaluate the breast lump

  • Diagnostic mammography. Mammography uses X-rays to produce an image (mammogram) of suspicious areas in your breast tissue. A fibroadenoma might appear on a mammogram as a breast mass with smooth, round edges, distinct from surrounding breast tissue.
  • Breast ultrasound. This technology uses sound waves to produce pictures of the inside of the breast. Your doctor might recommend a breast ultrasound in addition to a mammogram to evaluate a breast lump if you have dense breast tissue.

    For women younger than 30 who have a breast lump, the doctor likely will order a breast ultrasound first to evaluate the lump.

    If a mammogram indicates that you have a breast lump or other abnormality, a breast ultrasound might be used to further assess the lump. A breast ultrasound can help your doctor determine whether a breast lump is solid or filled with fluid. A solid mass is more likely a fibroadenoma; a fluid-filled mass is more likely a cyst.

Procedures to evaluate the breast lump

  • Fine-needle aspiration. Through a thin needle inserted into your breast, your doctor attempts to withdraw the contents of the breast lump. If fluid comes out, the lump is likely a cyst.
  • Core needle biopsy. A radiologist with guidance from an ultrasound usually performs this procedure. The doctor uses a needle to collect tissue samples from the lump, which go to a lab for analysis.

Source: http://www.mayoclinic.com

Complications

Most fibroadenomas don't affect your risk of breast cancer. However, your breast cancer risk might increase slightly if you have a complex fibroadenoma or a phyllodes tumor.

Source: http://www.mayoclinic.com

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