TY - JOUR A2 - Woodward, Timothy A. AU - Lee, Woo Jung AU - Uradomo, Lance T. AU - Zhang, Yang AU - Twaddell, William AU - Darwin, Peter PY - 2017 DA - 2017/09/13 TI - Comparison of the Diagnostic Yield of EUS Needles for Liver Biopsy: Ex Vivo Study SP - 1497831 VL - 2017 AB - Background and Aims. EUS-guided liver biopsy is an emerging method of liver tissue acquisition which is safe and had been shown to produce excellent histological yield. There is limited data comparing the diagnostic yield of different FNA needles. We aimed to compare the diagnostic performance of four commercially available 19-gauge FNA needles. Methods. Four FNA needles and one percutaneous needle were used to perform liver biopsies on two human cadaveric livers: Cook Echotip Procore™, Olympus EZ Shot 2™, Boston Scientific Expect Slimline™, Covidien SharkCore™, and an 18-gauge percutaneous needle (TruCore™, Argon Medical Devices). Each needle obtained biopsies by three, six, and nine complete back-and-forth motions of the needle (“throw”) with a fanning technique. The combined lengths of specimen fragments and the total number of complete portal tracts (CPT) were measured by a blinded pathologist. One-way analysis of variance (ANOVA) and Bonferroni correction were used for statistical analysis. Results. A total of 52 liver biopsies were performed. The Covidien SharkCore needle had significantly greater number of CPT compared to other FNA needles. The number of “throws” did not impact the number of CPT significantly. There was no statistically significant difference in mean total specimen length between each FNA needle type. Conclusion. The Covidien SharkCore needle produced superior histological specimen by capturing more CPT, possibly due to its unique needle design. SN - 1070-3608 UR - https://doi.org/10.1155/2017/1497831 DO - 10.1155/2017/1497831 JF - Diagnostic and Therapeutic Endoscopy PB - Hindawi KW - ER -