Systematic Review and Meta-Analysis of Diagnostic Accuracy of Endoscopic Ultrasound (EUS)-Guided Fine-Needle Aspiration (FNA) Using 22-gauge and 25-gauge Needles for Pancreatic Masses

BACKGROUND:Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) has been used for detecting pancreatic cancer. We aimed to compare the diagnostic yield of both 22-gauge and 25-gauge EUS-FNA for the detection of pancreatic cancer. MATERIAL AND METHODS:We searched the electronic databases including PubMed, EMBASE, Web of Science, Scopus, and Cochrane Library up to June 13, 2017. Two reviewers independently screened studies and extracted...