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Do your breasts ever feel “lumpy,” sore, or tender? If so, you may have fibrocystic breasts. This is a very common condition. It is not a disease, and it is not cancer. Your doctor can rule out problems and help you ease your symptoms.
Your breasts are made up of three kinds of tissue.
Glandular tissue is made up of the milk ducts and glands.
Fibrous tissue supports the breast.
Fatty tissue fills the spaces between the other tissues. It gives the breast its size.
Chemicals (hormones) that control your menstrual cycle can make glandular tissue swell. This stretches fibrous tissue, causing your breasts to feel sore. Hormones may also cause one or more fluid-filled lumps (cysts) to form. They may be large or small. Cysts are benign (not cancer). Cysts may become larger and your breasts may feel more tender just before your period.
You may want to do a breast self-exam about a week after your period starts. This helps you get used to the feel of your breasts. Talk to your doctor or nurse about how to examine your breasts. Call your doctor if you notice new lumps or changes that feel different than usual. Visit your doctor for regular exams. And have a mammogram as often as your doctor suggests.
Changes in hormone levels during your menstrual cycle affect your breasts. If you have fibrocystic breasts, your breasts may become sore or even painful, especially before your period. They may also swell or feel lumpier at this time.