A galactogram is a method used to determine which milk ducts are the sources of colored nipple discharges that test positive for occult blood. During a galactogram, contrast is injected into the discharging duct and mammogram images are obtained.

Also called a ductogram, a galactogram is helpful in diagnosing nipple discharge; ductal ectasia (a condition in which a lactiferous duct becomes blocked or clogged); fibrocystic changes; intraductal papillomas (tiny wart-like growths in breast tissue that cause benign nipple discharge); and breast cancer. Having a galactogram can accurately guide your surgeon to the ducts that may need to be removed, in case of ductal carcinoma or intraductal papillomas.

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