{"eventGroups":[{"description":"Patients undergo \\[\\^18F\\] FES PET scan. Patients also undergo standard clinical fludeoxyglucose F 18 (FDG)-PET or FDG-PET/CT scan up to 14 days prior to \\[\\^18F\\] FES PET scan.\n\nPatients begin clinically indicated endocrine therapy.\n\nPatients are followed-up to determine response on the therapy for 6 months using clinical exams, tumor marker assays, conventional imaging and standard clinical FDG PET/CT.\n\nlaboratory biomarker analysis: Correlative studies","id":"EG000","otherNumAffected":0,"otherNumAtRisk":20,"seriousNumAffected":0,"seriousNumAtRisk":20,"title":"Diagnostic (FES)"}],"frequencyThreshold":"0"}