mirror image biopsy

A biopsy of the contralateral breast when lobular carcinoma-in-situ (CIS) is found in one breast, a procedure used to exclude invasive carcinoma

mirror image biopsy

A biopsy of the contralateral breast when lobular carcinoma-in-situ–CIS is found in one breast, a procedure used to exclude invasive carcinoma. See Breast self-examination, Mammography. Cf Lumpectomy.