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Breast Changes - Nipple Discharge - Inflammation

When to See The Doctor About Breast Changes

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Updated September 02, 2011

Nipple Discharge

Nipple discharge accompanies some benign breast conditions. Since the breast is a gland, secretions from the nipple of a mature woman are not unusual, nor even necessarily a sign of disease. For example, small amounts of discharge commonly occur in women taking birth control pills or certain other medications, including sedatives and tranquilizers. If the discharge is being caused by a disease, the disease is more likely to be benign than cancerous.

Nipple discharges come in a variety of colors and textures. A milky discharge can be traced to many causes, including thyroid malfunction and oral contraceptives or other drugs. Women with generalized breast lumpiness may have a sticky discharge that is brown or green.

The doctor will take a sample of the discharge and send it to a laboratory to be analyzed. Benign sticky discharges are treated chiefly by keeping the nipple clean. A discharge caused by infection may require antibiotics.

One of the most common sources of a bloody or sticky discharge is an intraductal papilloma, a small, wartlike growth that projects into breast ducts near the nipple. Any slight bump or bruise in the area of the nipple can cause the papilloma to bleed. Single (solitary) intraductal papillomas usually affect women nearing menopause. If the discharge becomes bothersome, the diseased duct can be removed surgically without damaging the appearance of the breast. Multiple intraductal papillomas, in contrast, are more common in younger women. They often occur in both breasts and are more likely to be associated with a lump than with nipple discharge. Multiple intraductal papillomas, or any papillomas associated with a lump, need to be removed.

Infection and/or Inflammation

Infection and/or inflammation, including mastitis and mammary duct ectasia, are characteristic of some benign breast conditions.

Mastitis (sometimes called "postpartum mastitis") is an infection most often seen in women who are breast-feeding. A duct may become blocked, allowing milk to pool, causing inflammation, and setting the stage for infection by bacteria. The breast appears red and feels warm, tender, and lumpy.

In its earlier stages, mastitis can be cured by antibiotics. If a pus-containing abscess forms, it will need to be drained or surgically removed.

Mammary duct ectasia is a disease of women nearing menopause. Ducts beneath the nipple become inflamed and can become clogged. Mammary duct ectasia can become painful, and it can produce a thick and sticky discharge that is grey to green in color. Treatment consists of warm compresses, antibiotics, and, if necessary, surgery to remove the duct.

A word of caution: If you find a lump or other change in your breast, don't use this article to try to diagnose it yourself. There is no substitute for a doctor's evaluation.

Understanding Breast Lumps and Other Changes Index

Adapted from the National Cancer Institute, National Institutes of Health

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