The diagnostic yield of EUS-FNA depends on several factors, such as the experience of the endosonographer, the characteristics of the lesion, the clinical status of the patient, the size and…
Although endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) is the method of choice to obtain samples to reach definitive diagnosis of lesions of the gastrointestinal tract and of adjacent organs, it cannot…
This article addresses the technique of endoscopic ultrasound–guided fine-needle aspiration of solid lesions to obtain cytologic specimens. The technique can be broken down into a sequence of steps. The ultimate…
Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) is increasingly used as a diagnostic and therapeutic tool for pancreatic and other gastrointestinal disorders. Several factors affect the outcome of EUS-FNA, one of which…
Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) has become well established as a minimally invasive technique in diagnosing and staging various gastrointestinal, pancreaticobiliary, and retroperitoneal malignancies. The diagnostic accuracy of this procedure…
This article identifies key fundamentals of tissue acquisition, sample preparation, and staining. It defines the understanding of different aspects of sample preparations, such as types of smear-preparation techniques, touch preparations,…
There are 2 main reasons why oncologists may require additional tissue and a histologic section in addition to cytopathology from FNA specimens: improved diagnostic accuracy and molecular characterization of tumors….
The diagnostic performance of endoscopic ultrasound–guided fine-needle aspiration is strongly dependent on the availability of an onsite cytopathologist. The diagnosis of some rare tumors may require ancillary testing for which…
Shyam Varadarajulu, MD, Editor Robert H. Hawes, MD, Editor There has been a significant shift in the practice of EUS-guided tissue acquisition since the technique was first reported 21 years…
Charles J. Lightdale, MD, Consulting Editor Endoscopic ultrasound (EUS) started out as primarily an imaging technique, but it soon became clear that EUS-guided fine-needle aspiration (FNA) for tissue acquisition would…
