blunt duct adenosis

blunt duct ad·e·no·sis

adenosis of the breast in which the ducts are enlarged but not increased in number.

blunt duct adenosis (breast)

An older term still in common use for a columnar cell lesion (the increasingly preferred term), a histologic finding characterised by the presence of columnar epithelial cells lining the terminal ductulo-lobular unit which, if accompanied by atypia, is termed flat epithelial atypia.
 
Clinical findings
BDA (CCL) is often multifocal, occurs in women age 35–50, associated with microcalcifications and thus identified by mammography.
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[2] These include all non-malignant conditions like fibroadenoma, fibrocystic disease, mastalgia, mammary duct ectasia, sclerosing adenosis, lactational adenoma, benign phyllodes tumour, intraductal papilloma, fibrous disease, blunt duct adenosis, calcification, breast abscess, lactational mastitis, puerperal mastitis, granulomatous lobular mastitis, fat necrosis, tuberculous mastitis, galactocele, gynaecomastia and lipoma.
SPECTRUM OF BENIGN BREAST DISEASES IN A TERTIARY CARE HOSPITAL OF PUNJAB
Low-grade flat DIN needs to be distinguished from adenosis, particularly blunt duct adenosis (BDA).
Flat ductal intraepithelial neoplasia of the breast: a review of diagnostic criteria, differential diagnoses, molecular-genetic findings, and clinical relevance--it is time to appreciate the Azzopardi concept!

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