My 16 year old daughter

B123, Nope, no reason to panic. I am sorry she is experiencing problems, and of course we worry so much more when it is our kids. You are right to seek medical expertise. We are always eager to share any knowledge we can and offer encouragement, but we are not able to tell you exactly what is going on, only a doctor examining her can do that but yes, you know that.

There are so many changes and issues that come up in our breast that are benign, and I certainly pray that is the case for her. My first thoughts are that it is related to her sports and activity, plus bust size and age. My little cousin is her age, big busted, active, and she has a hardtime managing her chest in sports. Something guys do not have to deal with!

Dense breast tissue requires more monitoring as issues can be hidden in there and not so easy to feel/see. Her age makes hormonal changes more likely the cause and not cancer, so just relax for her and yourself until you have more info. And even then if you did get bad news, panicing will not help anyone. Please keep us posted and of course wishing you the best news after tests.

Breast density is commonly associated with age, so most young women have dense breasts. Cysts can certainly be uncomfortable because they are displacing normal breast tissue. If she is wearing an underwire bra that can cause some discomfort if it is pushing the cyst with the wire. Cysts can come and go, often with menstrual cycles. If she has too much discomfort with it she can have an ultrasound guided aspiration done to drain the cyst of fluid. I had this done a number of times - it is important to have it done with simultaneous imaging so they are sure the cyst is emptied and the walls collapsed, it is less likely to refill.