breast marker

breast marker

A popular term for an antigen variably present in breast tissue, which is used to either differentiate between benign or malignant breast lesions, or identify the breast as the origin of metastases.

breast marker

Lab medicine An antigen variably present in breast tissue used to either differentiate between benign or malignant breast lesions, or identify the breast as the origin of metastases. See BRCA, Immunoperoxidase.