Breast NeoplasmsBreastBreast DiseasesCarcinoma, Ductal, BreastFibrocystic Breast DiseaseFibroadenomaMammary Glands, HumanMammographyCarcinoma, Intraductal, NoninfiltratingReceptors, EstrogenUltrasonography, MammaryBreast FeedingMammaplastyAdenofibromaReceptors, ProgesteroneCell Line, TumorGene Expression Regulation, NeoplasticTumor Markers, BiologicalNipplesBreast Neoplasms, MaleImmunohistochemistryReceptor, erbB-2Neoplasm InvasivenessBreast ImplantsCarcinoma, LobularTamoxifenNipple Aspirate FluidEstrogensPrognosisCarcinomaCarcinoma, DuctalMastectomyRNA, MessengerLymphatic MetastasisTumor Cells, CulturedCarcinoma in SituNeoplasm ProteinsBreast CystPremenopauseGynecomastiaEstrogen Receptor alphaNeoplasm MetastasisNeoplasm StagingBreast Self-ExaminationPostmenopauseEstradiolReverse Transcriptase Polymerase Chain ReactionCase-Control StudiesMastectomy, SegmentalAromataseRisk FactorsMenopausePhantoms, ImagingTomography, OpticalMCF-7 CellsGene Expression ProfilingSensitivity and SpecificityImmunoenzyme TechniquesBiopsy, NeedleCell ProliferationEpithelial CellsTissue Expansion DevicesGenes, BRCA1Tissue Array AnalysisNeoplasms, Hormone-DependentReproducibility of ResultsAntineoplastic Agents, HormonalMammary Neoplasms, ExperimentalAxillaMilk, HumanRNA, NeoplasmNorpregnadienesRadiographic Image EnhancementBRCA1 ProteinHyperplasiaChoristomaNorpregnenesKi-67 AntigenGenes, erbB-2AntiperspirantsAromatase InhibitorsMammary Glands, AnimalAntineoplastic AgentsMice, Nude