Int J Gastrointest Interv.  2023 Nov;12(4):163-168. 10.18528/ijgii230032.

Scope position is a determining factor for diagnostic performance of endoscopic ultrasound-guided fine-needle aspiration for mass lesions in the pancreatic head

• Kim NH
• Kim HJ

• KMID: 2547830
• DOI: http://doi.org/10.18528/ijgii230032

Abstract

Background
This study aimed to identify the clinical and endoscopic factors that determined the diagnostic performance of endoscopic ultrasoundguided fine-needle aspiration (EUS-FNA) for mass lesions in the pancreatic head.
Methods
A total of 78 consecutive patients with suspected mass lesions in the pancreatic head detected by contrast-enhanced multi-detector-row computed tomography and/or magnetic resonance imaging, who underwent EUS-FNA for cytologic and/or histologic confirmation in our institution between June 2012 and April 2017 were enrolled in the current study.
Results
The sensitivity, specificity, positive predictive value, negative predictive value, and diagnostic accuracy of EUS-FNA for mass lesions in the pancreatic head in our series was 61/69 (88.4%), 9/9 (100.0%), 61/61 (100.0%), 9/17 (52.9%), and 70/78 (89.7%), respectively. In univariate analyses, the clinical and endoscopic factors for determining the diagnostic performance of EUS-FNA were the echoendoscope position during needle puncture (long vs. short scope position) and the distance from the echoendoscope to the mass lesion (< 1 cm vs. ≥ 1 cm). In the multivariate logistic regression analysis, the echoendoscope position during needle puncture was the only independent and significant determining factor for the diagnostic performance of EUS-FNA for mass lesions in the pancreatic head.
Conclusion
The echoendoscope position during needle puncture is a determining factor for the diagnostic performance of EUS-FNA for mass lesions in the pancreatic head.

Keyword

Diagnostic performance; Endoscopic ultrasound-guided fine needle aspiration; Pancreatic head lesion; Scope position; Sensitivity and specificity