 Outcomes assessed will include complications, postoperative pain, psychosocial well-being, physical functioning, fatigue, patient satisfaction and costs. The project will also evaluate the effects of race and ethnicity on reconstruction outcomes. Thirteen leading centers in the United States and Canada will participate. Together, these institutions perform over 3000 breast reconstructions annually. The five year study will evaluate patients preoperatively and at one week, three months, one year and two years following reconstruction. For data sources, the project will rely on medical and billing records, as well as a panel of generic and condition-specific patient-report outcome measures. 