Atypical lobular hyperplasia (ALH) is a non-cancerous change in the breast in which the number of epithelial cells lining the small glands (called acini) inside the lobules is increased, and the cells look mildly abnormal. Although the cells are abnormal, they are not abnormal enough, or extensive enough, to be called cancer. Instead, atypical lobular …
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Atypical ductal hyperplasia (ADH) is a non-cancerous (benign) change in the breast that starts from the cells lining the small tubes called ducts. Although it is not cancer, ADH is considered a precancerous condition because having it is associated with an increased chance of developing breast cancer in the future. Compared with someone without ADH, …
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A complex sclerosing lesion (CSL) is a benign (noncancerous) growth in the breast. Under the microscope, it has a central area of scar-like tissue with ducts and glands radiating outward from it, like the spokes of a wheel. Although the name includes the word “scar,” a complex sclerosing lesion does not develop after an injury …
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