Technical factors leading to additional imaging

On a standard CC view performed during routine screening mammogram, the nipple (arrows) can appear as a nodule (Panel A) if not properly positioned, leading to additional workup. When the CC view of the same breast is repeated with the nipple in profile (Panel B), it becomes clear that there is no lesion. Similarly, deodorant may appear as very faint radiodensities. This is usually seen in the axillary portion of the breast on the MLO view, mimicking microcalcifications (Panel C, arrow). A repeat MLO view (Panel D) after washing the axilla shows normal appearance.