BACKGROUND AND STUDY AIMS Endoscopic ultrasound - guided celiac plexus block (EUS-CPB) is an established treatment for pain in patients with chronic pancreatitis (CP), but the effectiveness and safety of repeated procedures are unknown. Our objective is to report our experience of repeated EUS-CPB procedures within a single patient. PATIENTS AND METHODS A prospectively maintained EUS database...

In the rat, external urethral sphincter (EUS) activation during micturition consists of three sequential phases: 1) an increase in tonic EUS activity during passive filling and active contraction of the bladder (guarding reflex), 2) synchronized phasic activity (EUS bursting) associated with voiding, and 3) sustained tonic EUS activity that persists after bladder contraction. These phases are p...

BACKGROUND AND OBJECTIVES Endoscopic ultrasound (EUS) is commonly used to examine pancreaticobiliary disorders. We hypothesize that the introduction of EUS service may change the pattern and the complexity of endoscopic retrograde cholangiopancreatographies (ERCPs) performed. The aim of this study is to assess the impact of introducing EUS on the volume, success, and complexity of ERCP. MATER...

EUS-guided direct cholangio-pancreatic access (EUS-DCP) may be feasible in patients with an inaccessible papilla [1], however, it poses a challenge due to its technical difficulty and relatively high complication rate [2,3]. EUS-rendezvous may be a more feasible alternative for antegrade cholangiopancreatography (EUS-RV) in patients with an inaccessible papilla than EUS-DCP. Even in expert hand...

Schwannomas of the gastrointestinal (GI) tract are rare subepithelial tumors comprising approximately 3.3% to 12.8% of all mesenchymal tumors of the GI tract. On endoscopic ultrasound (EUS) they are seen as hypoechoic tumors arising most commonly from the 4th proper muscle layer. Although EUS helps to distinguish tumor characteristics, tissue sampling is required for differentiation with other ...

end user satisfaction (eus) is one of the most widely used measures in assessing (efficiency/ effectiveness) of an information system. the goal of this research is to identify influential factors on (eus), based on justice theory. so we identified 8 influential factors on (eus) such as interactional justice, distributive justice, information system (is) performance expectation, equitable relate...

Background and study aims: It is common practice to perform ampullectomy without endoscopic ultrasound (EUS) for ampullary lesions < 1 cm but no data exists to support it. No studies have explored whether EUS findings of invasion correlate with malignancy or high-grade dysplasia (HGD) on pathology. We explored the association between adenoma size, pathology results, and invasion on EUS.  Patien...

BACKGROUND AND AIMS Our study aimed to assess the sensitivity of EUS and EUS-FNA for pancreatic neuro-endocrine tumors (pNETs) and compare performance over two consecutive 4 year 2 month periods, to investigate the comparative performance between solid and cystic pNETs and determine the incremental yield of EUS +/- FNA in individuals with a mass not diagnosed as a pNET after cross-sectional ima...

BACKGROUND/AIMS Recent studies have revealed that contrast-enhanced harmonic endoscopic ultrasonography (CEH-EUS) is beneficial in the differential diagnosis of malignant neoplasms of the pancreas and gallbladder from benign masses, in terms of the evaluation of microvasculature and real-time perfusion. In this study, we aimed to prove the clinical value of CEH-EUS in the differential diagnosis...

Endoscopic ultrasound (EUS) has been recently established as an indispensable modality for the diagnosis and management of pancreatobiliary and gastrointestinal (GI) disorders. EUS proficiency requires both cognitive and technical abilities, including an understanding of the appropriate indications, the performance of appropriate evaluations before and after the procedure, and the management of...