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Atypical ductal hyperplasia (ADH) is the term used for a benign lesion of the breast that indicates an increased risk of breast cancer. [1]The name of the entity is descriptive of the lesion; ADH is characterized by cellular proliferation (hyperplasia) within one or two breast ducts and (histomorphologic) architectural abnormalities, i.e. the cells are arranged in an abnormal or atypical way ...
Atypical hyperplasia is a high-risk premalignant lesion of the breast. It is believed that atypical ductal hyperplasia (ADH) is a direct precursor for low-grade mammary ductal carcinoma , whereas atypical lobular hyperplasia (ALH) serves as a risk indicator.
Examples include atypical ductal hyperplasia, atypical lobular hyperplasia, and intraductal papillomas. References. External links. Benign ...
Atypical ductal hyperplasia is associated with a 2.4-fold risk. [20] In contrast, a New England Journal of Medicine article [ 21 ] states that for women with a strong familial history of breast cancer, the risk of future breast cancer is roughly doubled, independent of histological status.
Presence of high-risk breast lesions like lobular carcinoma in situ (LCIS), atypical ductal hyperplasia (ADH) and atypical lobular hyperplasia (ALH). [7] Having dense breasts or breasts with diffuse microcalcification, as the screening for breast cancer is made difficult.
Hyperplasia of the breast – "Hyperplastic" lesions of the breast include usual ductal hyperplasia, a focal expansion of the number of cells in a terminal breast duct, and atypical ductal hyperplasia, in which a more abnormal pattern of growth is seen, and which is associated with an increased risk of developing breast cancer. [2]
These lesions are preceded by atypical lobular hyperplasia and may follow a linear progression to invasive lobular carcinoma (ILC), with specific genetic aberrations. [3] This process coincides with the progression of ductal neoplasia to ductal carcinoma in situ and invasive carcinoma.
Ductal carcinoma in situ (DCIS), also known as intraductal carcinoma, is a pre-cancerous or non-invasive cancerous lesion of the breast. [ 1 ] [ 2 ] DCIS is classified as Stage 0. [ 3 ] It rarely produces symptoms or a breast lump that can be felt, typically being detected through screening mammography .
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