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Applications of EUS for the molecular characterization and treatment of gastrointestinal diseases--a review of the recent medical literature.

With the development of linear echoendoscopes, interventional endoscopic ultrasonography (EUS) has become a clinical reality. The widest application for interventional EUS is EUS-guided fine-needle aspiration (FNA). EUS-guided FNA is performed for sampling pancreatic masses, submucosal tumors, lymph nodes, perigastrointestinal masses, adrenal glands, and hilar lesions.[1–10] However, there has been ongoing interest by endosonographers in applying EUS-guided FNA beyond the already established applications.