title: Bilateral breast cancer: biopsy of the opposite breast.
mesh_terms: D001706:Biopsy / Q000379:methods; D001943:Breast Neoplasms / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006801:Humans; D006965:Hyperplasia; D008207:Lymphatic Metastasis; D009378:Neoplasms, Multiple Primary / Q000175:diagnosis* / Q000473:pathology