Tags: Disease.
A galactocele is a retention cyst containing milk or a milky substance that is usually located in the mammary glands. It is caused by a protein plug that blocks off the outlet. It is seen in lactating women on cessation of lactation. Once lactation has ended the cyst should resolve on its own without intervention. A galactocele does not cause infection as the milk within is sterile and has no outlet for which to become contaminated.