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A reference for what the literature reports. Not medical advice.

Disease

flat ductal epithelial atypia

MONDO:0004008Mondo

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Findings

No curated finding names flat ductal epithelial atypia yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.

Definition

A breast lesion characterized by the presence of dilated terminal ductal lobular units in which the epithelial lining has been replaced by a single layer of mildly atypical cells, or there is atypical, monotonous epithelial hyperplasia of three to five layers. This lesion relates to columnar cell change with atypia and columnar cell hyperplasia with atypia.

Definition from the Mondo Disease Ontology (MONDO:0004008), read 2026-09-29. CC BY 4.0.

Where it sits

A kind of: breast intraductal proliferative lesion

Other names

7 names

Resolves to: flat ductal epithelial atypia

Also called: clinging carcinomaDIN 1Aductal intraepithelial neoplasia, grade 1AFEAflat ductal epithelial atypia of the breastflat epithelial atypiaflat epithelial atypia of the breast