What exactly is atypical ductal hyperplasia (adh)?

Breast cancer marker: ADH (vasopressin) is an abnormal proliferation of breast duct cells that is benign but is associated with present or future breast cancer. ADH (vasopressin) is suspected on mammograms with microcalcifications and is diagnosed on needle biopsy and usually requires surgical excision. About 30% of excisions for ADH (vasopressin) will show cancer. For the other 70% of women the risk of developing breast cancer over the next 8 years is 3.7%.

Benign: Atypical ductal hyperplasia, abbreviated adh, (vasopressin) is the term used for a benign lesion of the breast that indicates an increased risk of breast cancer. The name of the entity is descriptive of the lesion; ADH (vasopressin) 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 pattern.