<unk> , cytologically, architecturally and on a molecular basis, is identical to a low-grade ductal carcinoma in situ (DCIS); however, it has a limited extent, i.e. is present in a very small amount ( Image:Atypical ductal hyperplasia - low mag. Low mag. Image:Atypical ductal hyperplasia - high mag. High mag. Relation to low-grade ductal carcinoma in situ While the histopathologic features and molecular features of<unk>  are that of (low-grade) DCIS, its clinical behaviour, unlike low-grade DCIS, is substantially better; thus, the more aggressive treatment for DCIS is not justified.
Atypical ductal hyperplasia
Invasive lobular carcinoma
Ductal carcinoma in situ
Intraductal papilloma
Lobular carcinoma in situ
Fibroadenoma
Atypical hyperplasia
Focal nodular hyperplasia