Plugged milk ducts, also called clogged milk ducts or blocked milk ducts, are hard, tender lumps that form in the narrow milk ducts of the breast. (verywellfamily.com)
Oxytocin: A hormone made in a part of the brain called the hypothalamus that causes the uterus to contract and milk to be released into the milk ducts of the breast during breastfeeding. (acog.org)
Most inflammatory breast cancers are invasive ductal carcinomas, which means they developed from cells that line the milk ducts of the breast and then spread beyond the ducts. (ibcresearch.org)