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Fibrocystic Breasts - Topic Overview

This topic covers breast changes that feel lumpy, thick, and tender before your menstrual period. It is not meant for women who have had a breast biopsy showing "atypia" or "hyperplasia." These are cell changes that may lead to cancer.

What are fibrocystic breast changes?

Many women have breasts that feel lumpy, thick, and tender, especially right before their periods. These symptoms are called fibrocystic breast changes. They may also be called cyclic breast changes because they come and go with your menstrual cycle.

Fibrocystic breast changes are normal and harmless. They are not cancer, and they do not increase your chance of getting breast cancer.

But having fibrocystic breast changes can make it harder to find a lump that could be cancer. This is a special concern if you also have a higher than normal risk for breast cancer. So if you or a close family member has had breast cancer, or you have had radiation treatment or a breast biopsy showing atypical ductal hyperplasia (ADH), talk to your doctor about how often you need a breast checkup.

Doing a breast self-exam each month may help you know if an abnormal change occurs.

See a picture of breast anatomy .

What causes fibrocystic breast changes?

Experts think that fibrocystic breast changes are linked to the hormone changes that happen during your menstrual cycle. Each month, your body gets ready for a possible pregnancy. It releases hormones that signal the breasts to make milk. The milk (or mammary) glands get bigger, which may make your breasts feel lumpy and tender. These symptoms go away after you start your period.

You are more likely to have fibrocystic breasts if your mother or sisters have them too.

What are the symptoms?

If you have fibrocystic breasts, you may notice the symptoms right before your menstrual period. They probably get better by the time your period ends. You may find that:

  • Your breasts are swollen.
  • They feel tender or painful. Women often describe this as a dull or aching pain, heaviness, or soreness.
  • Your breasts feel lumpy. Your doctor may call this "generalized breast lumpiness." Lumpy (cystic) areas feel thick. You may have one or more lumps that are always in the same area and that grow and shrink with each menstrual cycle. The lumps move if you push on them. (A lump that is cancer usually does not move but feels stuck to your ribs.)

Symptoms can be on one or both sides and can occur up toward and under the armpit.

Many women first notice fibrocystic breast changes when they are in their 30s. At this age, your hormone levels start to vary more than before.

How are fibrocystic breast changes diagnosed?

If you notice a new breast lump, wait through one menstrual cycle. If it is still there after your period, see your doctor for a breast exam. If you are not having menstrual periods, see your doctor for a breast exam as soon as you notice a new lump.

WebMD Medical Reference from Healthwise

Last Updated: March 16, 2009
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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ENABLEX is a prescription medicine used in adults to treat the following symptoms due to a condition called overactive bladder:

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IMPORTANT SAFETY INFORMATION

You should not take once-daily ENABLEX if you have certain types of stomach problems, glaucoma, or have trouble emptying your bladder. Side effects of ENBLEX include blurred vision, and more commonly dry mouth, constipation, indigestion, and abdominal pain. Use caution when doing certain activities until you know how ENBALEX affects you.

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