Sentences with phrase «internal duct walls»

A ductogram, in which a catheter is inserted into a lactation duct through the nipple to either inject radioactive dye that can be detected on x-ray or insert a miniature camera to visualize the internal duct walls, does not affect milk production or safety since there are no incisions or tissue removal and the radioactive dye is not absorbed into either the mother's or the baby's tissue (see below).