Risks and Complications Rate in Liposuction: A Systematic Review and Meta-Analysis.

Liposuction is a surgical procedure used to remove localized excess adipose tissue. According to The Aesthetic Society's annual report, liposuction was the most commonly performed cosmetic procedure. Despite its popularity, existing literature lacks a unified understanding of risks associated with liposuction. This study aims to measure complications of liposuction. A systematic review and meta-analysis was reported according to PRISMA guidelines and registered on PROSPERO database (CRD42023471626). The primary outcome was overall complication rate. The absolute risk for individual complications was also assessed. From 2,957 articles, 39 studies were selected for analysis. In total, 29,368 patients were included, with a mean age of 40.62 years and mean BMI of 26.36 kg/m2. Overall, the rate of any complication was 2.62 [95% CI: 1.78; 3.84]. The most common complication was contour deformity, with a prevalence of 2.35% [95% CI: 1.05%; 5.16%]. The prevalence of hyperpigmentation was 1.49% [95% CI: 1.12%; 1.99%], seroma 0.65% [95% CI: 0.33%; 1.24%], hematoma 0.27% [95% CI: 0.12%; 0.60%], superficial burn 0.25% [95% CI: 0.17%; 0.36%], allergic reaction 0.16% [95% CI: 0.050%; 0.52%], skin necrosis 0.046% [95% CI: 0.013%; 0.16%], generalized edema 0.041% [95% CI: 0.0051%; 0.32%], infection 0.020% [95% CI: 0.010%; 0.050%], venous thromboembolism 0.017% [95% CI: 0.0060%; 0.053%], and local anesthesia toxicity 0.016% [95% CI: 0.0040%; 0.064%]. Liposuction is a safe procedure with low complications of which contour deformity is the most common. Raising awareness of specific risks can enhance surgical outcomes and improve patient-physician alliance.