A device suitable for viewing and illuminating a mammary duct orifice comprising a hollow receptacle defining an interior volume and an open aperture at a distal end thereof sized to circumscribe the nipple. The open aperture preferably is surrounded by an outwardly extending flange that can be provided with an adhesive. A vacuum port suitable for connection to a vacuum source to create a vacuum in the interior volume may also be configured as part of the hollow receptacle. An illumination source is provided within the device to illuminate nipple orifices when a nipple is positioned within the hollow receptacle.