Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 42 3 2004 06 15 232 234 F. Nili A. Tajaddini 2015 09 28 Bloody nipple discharge in infancy has rarely been reported in medical literature. We report a 7 month-old female infant with a one month history of bilateral nipple discharge. Endocrinologic and hematological workups were within normal limits. Breast ultrasonography showed two non-echogenic cystic areas in each breast. The problem resolved after a period of observation. This is a benign condition and resolves spontaneously, but if persistent, should be properly investigated. Biopsy or excision is not indicated. We recommend breast ultrasonography for the follow-up of this condition. https://acta.tums.ac.ir/index.php/acta/article/view/2726 https://acta.tums.ac.ir/index.php/acta/article/download/2726/2708