Unknown Case 10

29 y/o F postpartum female presents with an enlarging palpable lump. What is the most likely diagnosis?

unk lactating adenoma 1


  • Typically indistinguishable from fibroadenomas on imaging but may see hyperechoic area representing fat from milk
  • Regress spontaneously after pregnancy/lactation
  • Painful firm mass suggests infarction (5%)
  • Bromocriptine can be used to decrease size
  • No increased risk of malignancy