sentences:  Check with your doctor if you are unsure or have other symptoms that are worrying you.Fluid leaking from a cyst, as may happen due to puncture or vigorous compression during mammography, or due to seat belt injury in the course of an automobile accident, may trigger an aseptic inflammation in the surrounding breast tissue.The cystic nature of a breast lump can be confirmed by ultrasound examination, aspiration (removal of contents with needle), or mammogram.