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DUCTOGRAPHY
The breast is composed primarily of three structures: fat, lobules (that make the milk) and milk ducts (that carry the milk from the lobule to the nipple). Mammography and breast MRI (magnetic resonance imaging) are excellent methods to image the breast; however, they do not visualize the inside of the ducts. Galactography is a method that uses both mammography and injection of contrast material into the milk ducts to obtain a picture of the inside of the milk ducts in the breast. This information can occasionally be obtained with ultrasound.
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