Columnar cell lesions (breast)

Last revised by Tania Mercado Avendaño on 8 Jun 2021

Columnar cell lesions of the breast comprise a wide range of breast lesions which are commonly characterized by columnar cells lining the terminal ductal and lobular unit. These range from lesions that show little or no cytologic or architectural atypia to those that show sufficient cytologic and architectural features to warrant a diagnosis of atypical ductal hyperplasia or ductal carcinoma in situ (DCIS).

Entities that fall under this group include

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