<unk>  or ductography (or galactogram, ductogram) is a medical diagnostic procedure for viewing the milk ducts. The procedure involves the radiography of the ducts after injection of a radiopaque substance into the duct system. The procedure is used for investigating the pathology of nipple discharge.<unk>  is capable of detecting smaller abnormalities than mammograms, MRI or ultrasound tests. With<unk> , a larger part of the ductal system can be visualized than with the endoscopic investigation of a duct (called galactoscopy or ductoscopy). Causes for nipple discharge include duct ectasia, intraductal papilloma, and occasionally ductal carcinoma in situ or invasive ductal carcinoma. The standard treatment of<unk> cally suspicious breast lesions is to perform a surgical intervention on the concerned duct or ducts: if the discharge clearly stems from a single duct, then the excision of the duct (microdochectomy) is indicated; if the discharge comes from several ducts or if no specific duct could be determined, then a subareolar resection of the ducts (Hadfield's procedure) is performed instead. To avoid infection,<unk>  should not be performed when the nipple discharge contains pus.
Galactography
Photoglottography
Defecography
GI cocktail
Pepscan
Enteroscopy
Stool test
Sialoendoscopy