Then, a tiny suction device is placed over the nipple and a small amount of fluid is drawn from the milk ducts. The droplets of fluid help to locate the natural duct openings in the nipple. Next, a very thin catheter is inserted through the opening. A saline solution is infused through the catheter to rinse the duct and collect the cells. Then, the fluid is withdrawn and sent to a lab for analysis.
Most breast cancers start out in the milk ducts.
In a recent study, researchers using ductal lavage found abnormal, suspicious, or malignant cells in 24 percent of women at high risk for breast cancer. The cellular changes are not necessarily an indication of breast cancer development. The information on this factsheet is not meant to substitute for a consultation with your physician or with another healthcare professional. Speak with your doctor if you have questions about any medical problem.