Breast NeoplasmsBreastCarcinoma, Ductal, BreastBreast DiseasesBreast FeedingBreast Neoplasms, MaleReceptors, EstrogenMammographyFibrocystic Breast DiseaseCell Line, TumorBreast ImplantsReceptor, erbB-2Breast Self-ExaminationReceptors, ProgesteroneTamoxifenGene Expression Regulation, NeoplasticCarcinoma, Intraductal, NoninfiltratingMastectomyCarcinoma, LobularPrognosisTumor Markers, BiologicalNeoplasm InvasivenessUltrasonography, MammaryNeoplasm MetastasisGenes, BRCA1Antineoplastic Agents, HormonalLymphatic MetastasisRisk FactorsNeoplasm StagingCase-Control StudiesPostmenopauseImmunohistochemistryMastectomy, SegmentalMilk, HumanMammaplastyTumor Cells, CulturedBreast CystCarcinomaNeoplasm ProteinsChemotherapy, AdjuvantMCF-7 CellsMammary Glands, HumanFibroadenomaEstrogen Receptor alphaNipplesEstrogensAntineoplastic AgentsPremenopauseMammary Neoplasms, ExperimentalBreast ImplantationBRCA2 ProteinMenopauseBRCA1 ProteinAxillaGenes, BRCA2