Breast Cyst - National Breast Cancer Foundation - Fluid filled cyst in breast
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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. Based on the findings of the clinical breast exam and imaging tests, you may need fine-needle aspiration or a breast biopsy. Breast ultrasound can help your doctor determine whether a breast lump is fluid-filled or solid. If fluid comes out and the breast lump goes away, your.