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Catheters designed to be inserted into the breast ducts to obtain cells for cytologic testing. These catheters usually consist of a flexible, small-diameter tube. Typically, a small amount of anesthetic is infused through the catheter into a milk duct, then fluid is introduced into the duct and aspired to rinse the duct (ductal lavage) using a syringe. The aspirated fluid together with epithelial cells are collected in a vial for laboratory cytologic analysis. The procedure is typically performed in women who are at high risk for developing breast cancer.
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