Abstract
Lactating adenomas (LAs) are uncommon benign breast tumors that typically occur in the late pregnancy or lactation period and are among the most prevalent breast lesions during puerperium. They commonly present with a painless, rapidly growing, large, mobile breast lump either late in pregnancy or the postpartum period. Despite being a condition, a core biopsy is almost always required to exclude malignancy.We are presenting a case of a 34-year-old patient who was referred to our unit with a progressive increase in size of the pre-existing right breast lump that has been there before pregnancy. Due to the massive increase in size in a short period, the lump was removed shortly after delivery with an acceptable cosmetic outcome.
Highlights
Benign breast diseases represent a fair amount of referrals to breast units; some of which are common during pregnancy and lactation period
A lactating adenoma (LA) is a rare benign breast tumor that tends to present during pregnancy or shortly after as palpable, well-circumscribed, lobulated masses that vary in size
Some authors suggested that pregnancy-related hormones can enhance the growth of pre-existing benign breast lesions as fibroadenomas [5] which was the case with our patient
Summary
Benign breast diseases represent a fair amount of referrals to breast units; some of which are common during pregnancy and lactation period. Our multidisciplinary team advised discussing surgical excision options or a follow-up USS in three months with the patient who opted for the latter option She was seen in the clinic four-month afterwards with a follow-up USS which showed a considerable increase in size to 91 mm but in keeping with the previous findings (Figure 2). Subsequent clinical examination at 23 weeks of pregnancy, the mass was found to continue to grow in size; at that point, a breast MRI was recommended and carried out It showed 117 mm well-circumscribed hamartoma occupying the lower half of the breast with vivid heterogeneous enhancement and some central unenhanced dendritic like areas (Figure 3). Final histology revealed a 145 mm x 75 mm x 60 mm lactational adenoma with benign nodular fibroadenomated changes
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