OBJECTIVES Since 2009, the rate of nondiagnostic (ND) thyroid nodule fine-needle aspiration (FNA) has ranged from 2% to 20%. A ND result can cause further patient morbidity secondary to repeated procedures and delay in diagnosis. The use of real-time strain elastography (RTE) in determining nodule malignant risk has gained considerable focus recently. A less studied area where RTE may prove ben...

HYPOTHESIS Endoscopic ultrasound (EUS) and endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) are accurate for the preoperative staging of pancreatic ductal carcinoma. DESIGN Retrospective medical record review. PATIENTS A prospective registry of 98 patients having EUS-FNA for peripancreatic masses from April 1994 to April 1998 was analyzed. MAIN OUTCOME MEASURE The accuracy of...

AIMS To evaluate a) new diagnoses by endoscopic ultrasound guided real-time fine-needle aspiration (EUS-FNA) compared with EUS alone; b) the predictive factors for an accurate EUS-FNA diagnosis, and c) the cost-effectiveness of the presence of an on-site cytopathologist. PATIENTS AND METHODS Demographic data, ultrasonographic characteristics, technical information on EUS-FNA and cytological r...

We thank Professors Yi and Lee for their instructive comments on our article in Endocrinology and Metabolism [1]. Thyroid nodules are a common clinical problem and the incidence of thyroid nodules has increased with the wide use of thyroid ultrasonography (US). Fine-needle aspiration (FNA) is commonly used as the first-line screening test for patients with thyroid nodules, and is the most relia...

BACKGROUND AND STUDY AIMS Techniques to optimize endoscopic ultrasound-guided tissue acquisition (EUS-TA) in a variety of lesion types have not yet been established. The primary aim of this study was to compare the diagnostic yield (DY) of endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) to endoscopic ultrasound-guided fine needle biopsy (EUS-FNB) for pancreatic and non-pancreatic ...

Since the publication of our editorial comment, two further prospective studies have investigated the addition of EUS-FNA to a standard work-up for unselected LC patients [3, 4]. In one of these studies, the results of EUS-FNA were blinded [3]. The conclusions were clear; EUS-FNA, when added to MS (and TBNA), improves the pre-operative staging of LC, resulting in a reduced rate of futile thorac...

Introduction Since Vilmann et al. published the initial report of EUS‐FNA of the pancreas in 1992, this technique has become widely used to reliably obtain specimens from lesions around the gastrointestinal tract. The major target lesions of EUS‐FNA are pancreatic masses, upper abdominal lymph nodes, and upper gastrointestinal submucosal tumors. Recently, however, the target lesions of EUS‐FNA ...

an elevated lesion covered with normal mucosa is observed during endoscopy, the endoscopist would be suspicious of the presence of a mass underneath the mucosa and calls it a subepithelial lesion (SEL). However, SEL may be a true intramural mass underneath the mucosa or an extralumi-nal compression mimicking an intramural mass. For the evaluation of SEL, endoscopic ultrasonography (EUS) is cons...