Endoscopic ultrasound fine-needle aspiration is considered the technique of choice for acquisition of tissue in and around the digestive tract. The emergence of selective, targeted therapies, directed toward a particular…
Although endoscopic ultrasound (EUS) fine-needle aspiration (FNA) is a safe and accurate procedure, the diagnostic yield varies. Factors contributing to the diagnostic accuracy of EUS FNA include endosonographer and cytopathologist…
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…
