Which term best describes a milk-retention cyst?

The term "galactocele" specifically refers to a milk-retention cyst that forms when milk accumulates in the breast tissue, typically caused by a blockage in the milk ducts. This condition is often seen in breastfeeding women when the ducts become engorged and the milk cannot exit properly. The cyst can be a smooth, round mass that may or may not cause discomfort.

Understanding the characteristics of a galactocele is important for differentiating it from other breast conditions. Mastitis, for example, is an infection of the breast tissue that leads to inflammation and is often associated with redness and pain, distinct from the non-inflammatory nature of a galactocele. A fibroadenoma is a benign tumor of the breast characterized by smooth edges and can be confused with other lumps but does not relate to milk retention. Lastly, an abscess represents a collection of pus caused by infection, which differs significantly from the milk-filled nature of a galactocele.

Therefore, the correct term that accurately describes a milk-retention cyst is galactocele, as it embodies the specific condition of retained milk leading to cyst formation in the lactating breast.