The diagnostic performance of novel torque technique for endoscopic ultrasound-guided tissue acquisition in solid pancreatic lesions: A prospective randomized controlled trial.

Abstract:

BACKGROUND AND AIM:Although several techniques for improved outcomes in endoscopic ultrasound (EUS)-guided tissue acquisition have been reported, the reported diagnostic yield for pancreatic masses is not satisfactory. The effects of novel technique (torque method) on twisting the scope in the clockwise or counterclockwise direction during EUS-fine needle biopsy (EUS-FNB) are unknown. We compared the diagnostic yield of EUS-FNB for pancreatic masses using the torque and standard techniques. METHODS:From April 20, 2017, to March 16, 2018, 124 consecutive patients with solid pancreatic mass who underwent EUS-FNB using either the torque or standard technique were randomly assigned. Three passes were made with each technique, comprising 10 uniform to-and-fro movements on each pass with a 10-mL syringe suction. The primary outcome was procurement rates of histologic cores, and the secondary outcomes were the diagnostic performance and technical failure. RESULTS:There were significant differences between the groups regarding the procurement rate of the histologic core and optimal quality core (standard vs torque: 87.1% [54/62] vs 98.4% [61/62], P = 0.038 and 79.0% [49/62] vs 93.5% [58/62], P = 0.037). The sensitivity, specificity, positive predictive value, and negative predictive values of EUS-FNB were 85.45%, 100%, 100%, and 46.67%, respectively, for the standard technique and 96.49%, 100%, 100%, and 71.43%, respectively, for the torque technique. The diagnostic accuracies of the standard and torque techniques were 87.10% and 96.77%, respectively. CONCLUSIONS:The torque technique for EUS-FNB offered acceptable technical feasibility and superior diagnostic performance, including optimal histologic core procurement, compared with the standard technique.

authors

Park SW,Lee SS,Song TJ,Koh DH,Hyun B,Chung D,Lee J,Shin E,Hong SM,Park CH

doi

10.1111/jgh.14840

subject

Has Abstract

pub_date

2020-03-01 00:00:00

pages

508-515

issue

3

eissn

0815-9319

issn

1440-1746

journal_volume

35

pub_type

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