<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have noticed some changes in my breasts. I am concerned because I have a skin growth, warts, a lump in my breast, an irregular belly button, and vaginal dryness. What could be the problem?  <response>: Based on your symptoms, its possible that you have a breast cyst. A breast cyst is a fluid-filled sac that can develop in the breast tissue. It can cause a lump or mass in the breast, and also cause skin changes around the area. However, we need to do some tests to confirm the diagnosis. 