A breast cyst, an oval or round fluid-filled sac, may move slightly when you press on it. Breast cysts are fluid-filled sacs inside the breast, which are usually not cancerous benign. You can have one or many breast cysts and they can happen in one or both breasts. They're often described as round or oval lumps with distinct edges. A breast cyst usually feels like a grape or a water-filled balloon, but sometimes a breast cyst feels firm.
Breast cysts are round or oval structures filled with fluid. Most breast cysts are benign and do not increase your risk of breast cancer. They can be very tiny, or they can be large enough to feel through the skin or see on an imaging test a grossly evident cyst, or gross cyst. Many cysts fall somewhere in between. In more than half of cases, women develop multiple cysts, either all at once or over a period of time. Cysts also can cause pain, tenderness, or lumpiness in the breast. Those symptoms may worsen and get better at different points in the menstrual cycle.
Learn about our expanded patient care options for your health care needs. There are many possible causes of non-cancerous benign breast lumps. Two of the most common causes of benign single breast lumps are cysts and fibroadenomas. In addition, several other conditions can present themselves as lumps, such as fat necrosis and sclerosing adenosis. A breast abscess is a pocket of pus that causes inflammation and a sore lump in the breast.
What are breast cysts? What are the symptoms of breast cysts? What causes breast cysts? How are breast cysts found?