Methods for performing medical procedures within the duct of a breast are
described. An exemplary embodiment of the invention includes the steps of introducing
a guiding member into a breast duct; introducing and positioning a member having
an internal lumen in the breast duct; introducing a wash fluid into the breast
duct through the internal lumen; removing washings from the breast duct through
the internal lumen; and collecting the washings for cytological analysis.
