TOPICS: Lactiferous ducts, acute mastitis, S. aureus, breastfeeding, erythematous breast, purulent nipple discharge, periductal mastitis, subareolar ducts, smokers, subareolar mass, nipple retraction, mammary duct ectasia, multiparous postmenopausal women, periareolar mass, green brown nipple discharge, plasma cells, fat necrosis, interlobular stroma, trauma, abnormal calcification, mammography, giant cells
