Abstract
ABSTRACT Background and objectives As an emerging minimally invasive technology, endoscopic ultrasound (EUS) has been reported to treat pelvic abscess instead of surgical or image-guided percutaneous drainage (PCD) under certain conditions. The aim of this study was to assess the efficacy and safety of EUS-guided drainage for patients with pelvic abscesses. Methods We conducted a comprehensive literature search on PubMed, Embase, Cochrane Library, and Web of Science databases (inception–March 2022). The main outcomes were technical success, clinical success, and complications. Comprehensive meta-analysis software was used to calculate the pooled event rate. Results Twelve studies containing 272 patients were included. These pelvic abscesses most frequently developed after abdominal and pelvic surgery (n = 180, 66.2%), inflammatory bowel disease (n = 32, 11.8%), and other inflammatory conditions. Respectively, the pooled technical and clinical success rate was 100% and 88.7% [95% confidence interval (CI): 83.8–92.2%, I2 = 1.0%, p < 0.001]. After excluding an individual study, the pooled rate of complications changed from 11.5% (95% CI: 7.4–17.4%, I2 = 38.8%, p < 0.001) to 8.2% (95% CI: 5.0–13.3%, I2 = 0, p < 0.001). Conclusions EUS-guided drainage of the pelvic abscess was feasible, effective, and safe. Further randomized-controlled studies with large-sample sizes were required in the future.
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