A prospective randomized study comparing 25-G and 22-G needles of a new platform for endoscopic ultrasound-guided fine needle aspiration of solid masses

Published on Jan 1, 2016in Digestive and Liver Disease4.088
· DOI :10.1016/J.DLD.2015.09.017
Silvia Carrara15
Estimated H-index: 15
Andrea Anderloni29
Estimated H-index: 29
+ 7 AuthorsAlessandro Repici75
Estimated H-index: 75
Abstract Background A new needle platform for endoscopic ultrasound-guided fine-needle aspiration biopsy has been developed that allows interchangeability of all needle sizes. Aims To prospectively compare the efficacy of the new 25-G needles and 22-G needles for obtaining an adequate aspirate of solid masses. Methods Randomized controlled trial of 144 patients referred for endoscopic ultrasound-guided fine-needle aspiration of solid pancreatic masses, intraparietal tumours, or lymph-nodes, randomized to the 25-G or 22-G needle arms. Results An adequate specimen was obtained from 74.3% of cases. The sample tended to be more adequate in the 25-G compared to the 22-G group (81% vs. 68%; p = 0.09). Crossover was required in 14 (19%) and 12 (17%) cases in the 22-G and in the 25-G groups, respectively (p = 0.7). The overall rate of adequacy improved from 74% before crossover to 90% after crossover (p  Conclusions The 25-G needle was superior to the 22-G needle for endoscopic ultrasound-guided fine-needle aspiration biopsy. The adequacy and diagnostic accuracy improved after crossover, reaching 90%.
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