Breast Neoplasms, MaleGynecomastiaBreastBreast NeoplasmsBRCA2 ProteinCarcinoma, Ductal, BreastGenes, BRCA2Receptors, EstrogenMastectomyGenes, BRCA1Carcinoma, Intraductal, NoninfiltratingReceptors, ProgesteroneReceptor, erbB-2TamoxifenAntineoplastic Agents, HormonalGerm-Line MutationBreast DiseasesPrognosisTNF Receptor-Associated Factor 4Neoplasm ProteinsTumor Markers, BiologicalNeoplasm StagingRisk FactorsLymphatic MetastasisBRCA1 ProteinCell Line, TumorMammographyGenetic Predisposition to DiseaseGene Expression Regulation, NeoplasticSurvival RateImmunohistochemistryNeoplasm MetastasisAge FactorsRetrospective StudiesNeoplasm InvasivenessOvarian NeoplasmsIncidenceCarcinoma, LobularCase-Control StudiesFollow-Up StudiesKaplan-Meier EstimateTissue Array AnalysisMutationRegistriesAdenocarcinomaChemotherapy, AdjuvantDNA Mutational AnalysisEarly Detection of CancerTreatment OutcomeSurvival AnalysisAntineoplastic AgentsEstrogensPostmenopauseCarcinomaMastectomy, Modified RadicalPedigreeDisease-Free SurvivalTranscription FactorsMCF-7 CellsItalyGene Expression ProfilingMice, NudeBreast FeedingPremenopauseTumor Cells, CulturedAntineoplastic Combined Chemotherapy ProtocolsEstrogen Receptor alphaUltrasonography, MammaryDrug Resistance, NeoplasmNeoplasms, Ductal, Lobular, and MedullaryBreast Self-ExaminationMammary Neoplasms, ExperimentalNeoplasms, Hormone-DependentRiskExonsCell ProliferationBreast CystNeoplasm Recurrence, LocalMenopauseProstatic NeoplasmsKi-67 AntigenMastectomy, RadicalReverse Transcriptase Polymerase Chain ReactionProspective StudiesFibrocystic Breast DiseaseAromatase InhibitorsRNA, MessengerRisk AssessmentEstrogen AntagonistsLung NeoplasmsSurvivorsMastectomy, SegmentalAxillaDisease ProgressionBiopsy, NeedleGenes, erbB-2Odds RatioUnited StatesNeoplasmsCombined Modality Therapy