Use of autologous fat grafting for breast reconstruction: a systematic review with meta-analysis of oncological outcomes.

Abstract

There is growing interest in the use of autologous fat grafting (AFG) for breast reconstruction. Concerns have been raised regarding its effectiveness and safety. The primary objective was to determine the oncological, clinical, aesthetic and functional, patient reported, process and radiological outcomes of AFG. A protocol was published on PROSPERO (CRD42013005254). Types of studies: All original studies. Women undergoing reconstruction after surgery for breast cancer. Types of Interventions: AFG techniques for reconstruction. Types of outcome measures: Oncological, clinical, aesthetic and functional, patient reported, process and radiological. Search terms and keywords: The search strategy was devised to find papers regarding AFG for breast reconstruction. Electronic databases were searched from 1st January 1986 to 31st March 2014 including: PubMed, MEDLINE, EMBASE, SCOPUS, The Cochrane Library, and clinical trial registries. Identification and selection of studies: Title and abstract screening and full text assessment undertaken separately by independent researchers. Data extraction, collection and management: Data extracted by two researchers and stored in a standardised database. 35 studies were included (3624 patients) with a high degree of patient and surgeon satisfaction over a mean of 1.9 sessions at 18 month follow-up. Fat necrosis was the commonest reported complication (4.4%), biopsy of a subsequent breast lump was required in 2.7% and an interval mammogram in 11.5%. The weighted mean recurrence rate was 4.4% at 24.6 months. Meta-analysis of comparative studies showed no significant difference in oncological event rates between AFG and non-AFG groups (p=0.10). AFG is a potentially useful reconstructive tool, has a relatively low complication rate, with the majority of patients and clinicians satisfied or very satisfied with the results. Long term clinical and radiological follow-up is required. Further research is necessary to confirm oncological ramifications.