Feasibility and efficiency of a new 22G core needle: a prospective comparison study

Abstract

FNB with the new 22G core needle was technically feasible, efficient and comparable to FNA with a standard needle. The core needle required fewer passes to provide an adequate sample, offering potentially shorter procedure time.

Accuracy and inter-observer agreement of the Procore™ 25 gauge needle for endoscopic ultrasound-guided tissue core biopsy

“…Based on all these premises, in the last decade, alternative sampling techniques and dedicated needles to obtain core tissue biopsy specimens for histological examination under EUS guidance have been used and developed [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. In particular, studies using standard 19G needles with or without the stylet have reported very high success rates of tissue acquisition in different patient populations [16][17][18][19][20][21].…”

“…In particular, studies using standard 19G needles with or without the stylet have reported very high success rates of tissue acquisition in different patient populations [16][17][18][19][20][21]. Moreover, the Procore TM needles specifically designed to obtain histological samples have been developed and studies using the 19G and the 22G Procore TM have provided excellent results [22][23][24][25]. In the search for a needle able to balance the ability to acquire tissue core biopsy specimens with the easy usability, which would permit its utilization by the large majority of endosonographers, a 25G Procore TM needle with the same reverse bevel technology has also been developed [26].…”

“…Moreover, new needles, the Procore TM needles, specifically designed to obtain histological samples have become available. Various studies using the 19G and the 22G Procore TM have provided excellent results [22][23][24][25], while only one study using the 25G Procore TM is available and limited to patients with pancreatic masses [26].…”

High-Quality Endoscopic Ultrasound-Guided Fine Needle Aspiration Tissue Acquisition

“…22G and 25G ProCore needles are also available, which facilitate transduodenal sampling. Three recent randomized trials comparing the 22G or 25G ProCore needles to standard FNA needles in pancreatic masses and peripancreatic lymphadenopathy [21–23] have concluded that there is no significant difference in establishing a correct diagnosis between needles. In a study using the 25G ProCore needle, while a cytological diagnosis was established in 96% of 50 patients, histological core tissue was procured in only 32% of patients [22].…”

When to puncture, when not to puncture: Submucosal tumors

“…Studies in pancreatic lesions and lymphadenopathy have found similar diagnostic yields to aspiration needles, but may require fewer passes. [3944] There are no published studies specifically evaluating ProCore needles to establish a diagnosis of subepithelial lesions or GIST, although one series included 13 patients with gastric subepithelial lesions established the feasibility of the approach. [45]…”