lactating adenoma

lac·tat·ing ad·e·no·ma

an uncommon adenoma of the breast composed of tubuloacinar structures with pronounced secretory changes such as are seen in pregnancy and lactation.
Farlex Partner Medical Dictionary © Farlex 2012
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Lactating adenoma occurred in 2.46% of the patients and all were in their third decade of life.
Table 1: Frequency of FNA diagnosis of 1,000 breast lesions in various age groups Breast lesions Age (years) 16-20 21-30 31-40 Inflammatory Acute mastitis 3 26 8 diseases Chronic granulomatous 4 7 9 (n = 159) mastitis Tubercular mastitis 1 4 3 Benign Fibroadenoma 108 327 3 lesion Lactating adenoma 4 26 6 (n = 573) Fibrocystic change - 5 19 Fibroadenosis 12 17 1 Gynecomastia 5 6 Galactocele 1 2 3 Benign phyllodes 2 1 Organized hematoma 2 2 1 Malignant Duct carcinoma 7 lesion Mucinous carcinoma (n = 268) Papillary carcinoma Medullary carcinoma Lobular carcinoma Metastasis Total Breast lesions Age (years) Total ?
Lactating adenoma is one of the breast tumours associated with pregnancy.
Lactating adenoma is a rare breast tumor, most often associated with pregnancy.
Lactating adenoma is a rare tumor and there are differing views on its histogenesis.
Fibroadenoma with secretory hyperplasia should be distinguished from lactating adenoma; the latter lacks the characteristic stroma in a fibroadenoma.
Rapid increase in size in a lactating adenoma can be due to infarction.(9) Reeves et al have also described rapid increase in size in their report of giant lactating adenoma.
In summary we report a case of a lactating adenoma presenting as a giant breast mass.
There were 36 fibroadenomas, 12 cysts, 7 abscesses, 1 lactating adenoma, and 1 phylloides tumor.
One proved to be a lactating adenoma and the rest were fibroadenomas.
In a study of 91 benign breast pathologies in pregnant women, 70% were inflammatory/infective and 30% were benign focal masses: fibroadenomas (40%), lactating adenomas (30%), galactoceles (17%) and papillomas (2%).
Lactating adenomas are relatively uncommon breast tumours developing from the innermost layer of alveoli which is comprised of lactocytes.