An approach is provided for performing cloud based computer network security services. A plunger having a disc support element projects from the platform though the base axial opening and movable between a fist position supporting the disc above the platform and a second position enabling contact between the label and the disc. The pad is attached to the compression plate in the x-ray field of the mammography unit, a breast is compressed using the compression plate, a mammogram of the compressed breast is obtained, the pad producing no significant visual artifact on the mammogram, and thereafter the pad is removed.