title: Bilaterality of breast cancer: biopsy of the contralateral breast.
mesh_terms: D001706:Biopsy; D001940:Breast / Q000473:pathology; D001943:Breast Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D002285:Carcinoma, Intraductal, Noninfiltrating / Q000473:pathology; D005260:Female; D006801:Humans; D008408:Mastectomy; D013997:Time Factors