I had this for years - it's uncomfortable and it makes self-breast exams difficult at best, and useless at worst. I mean really, checking yourself for lumps, when you know there are a bunch of them there to start?
It's a nuisance and can be stressful when you have a mammogram and they ask you to repeat it, but it's often just to get a better image. I often had repeat mammograms because the first films weren't always clear, although that is less of a problem with better digital imaging. With all of the new research on the dangers of too much radiation from the tests, I'm rethinking the conventional wisdom of yearly mammography - and many doctors are rethinking it as well.
If your cysts are painful, that's kind of a good sign - cancer lumps aren't usually painful. The cystic pain can fluctuate with hormones and be worse at certain times of the month.
After many years, I got rid of them completely by using comprehensive nutritional supplementation. My doctor told me she can't find any, and she is almost as thrilled as I am. I'm in the field of nutrition, and I can tell you that doctors don't often have much training in nutrition - and the good ones will admit it. I'd be very careful about choosing a single nutrient or herb (as one person suggested with primrose oil) because so many people get in trouble with these. You don't know of the quality of the product (doesn't matter if it's sold in a health food store or a whole foods market - it matters where it's manufactured and what the quality of the ingredients is). Lots of hospitalizations or cardiac episodes by trying to get your body to process and absorb a specific vitamin or mineral or element without all the "partner" ingredients it needs. So I would be very careful about believing that a single nutrient can help you.
I do think it's wise to cut back on things like caffeine, but that wasn't enough for me even over 10 years. It's when I did the right things for breast health and general health that I got relief and a clear medical report.