Diagnostic yield of EUS-guided through-the-needle biopsy in pancreatic cysts: a meta-analysis.

Published on Jul 1, 2020in Gastrointestinal Endoscopy6.89
· DOI :10.1016/J.GIE.2020.01.038
Antonio Facciorusso19
Estimated H-index: 19
(University of Foggia),
Valentina Del Prete13
Estimated H-index: 13
(University of Foggia)
+ 2 AuthorsSachin Wani68
Estimated H-index: 68
(Anschutz Medical Campus)
Abstract Background and Aims There is currently limited evidence supporting the use of endoscopic ultrasound-guided through-the-needle biopsy for sampling pancreatic cystic lesions. The aim of this meta-analysis was to provide a pooled estimate of the diagnostic performance of through-the-needle biopsy for sampling of pancreatic cysts. Methods A bibliographic search on the main databases was performed through September 2019. Pooled effects were calculated using a random-effects model by means of DerSimonian and Laird test. The primary outcome was sample adequacy. Additional endpoints were diagnostic accuracy, optimal histological core procurement, mean number of needle passes, pooled specificity, and sensitivity. Adverse event rates were also analyzed. Results Eleven studies enrolling 490 patients were included. Eight articles compared through-the-needle biopsy to cytology/cystic fluid analysis. Most patients were female, and body/tail was the most frequent location of cystic lesions. Sample adequacy with through-the-needle biopsy was 85.3% (78.2%-92.5%) and subanalysis was performed according to cyst morphology, size, and location confirmed the above reported result. Through-the-needle biopsy clearly outperformed fine-needle aspiration both in terms of sample adequacy (odds ratio, 4.83; 95% CI, 1.63-14.31; p=0.004) and diagnostic accuracy (odds ratio, 3.44; 95% CI, 1.32-8.96; p=0.01). Pooled diagnostic accuracy rate, sensitivity and specificity of through-the-needle biopsy were 78.8%, 82.2%, and 96.8%, respectively. A mean of 3.121 (2.98-3.25) passes through the cyst was needed to obtain adequate histological samples. The incidence rates of mild bleeding and pancreatitis were 4% and 2%, respectively. Conclusion Our meta-analysis speaks in favor of the use of through-the-needle biopsy as a safe and effective tool in EUS-guided tissue acquisition of pancreatic cysts.
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