A case of postlactational microcalcifications is reported. A 42-year-old woman presented for screening mammography 2 months after completion of breast-feeding. Comparison to her pregravid screening mammogram revealed the appearance of multiple groups of indeterminate microcalcifications bilaterally (BIRADS IV). She underwent bilateral stereotactic core biopsies of representative areas, yielding benign pathology. There have been anecdotal accounts and five reported cases of lactational microcalcifications in the radiology literature. We discuss the possible etiologies as well as implications of this mammographic finding.