For nipple discharge there is galactography where we demonstrate the breast milk ducts. It is a painless procedure but requires expertise by the operator and special equipment.
A nipple smear is done when we study the nature of a discharge and is simple smearing the nipple discharge onto a slide for the laboratory.
Ductal Lavage is an expensive and time consuming procedure for investigating risk. it is hardly ever done nowadays.
MRI is reserved for difficult problems and is an extremely expensive diagnostic study. Unfortunately at present, it is associated with too many false positive results which can result in unfortunate over treatments.
