edgepedia

Endoscopic ultrasound

7 articles

Endoscopic ultrasonography

Endoscopic ultrasonography (EUS) is an imaging technique combining a flexible endoscope with an ultrasound transducer at its tip, imaging the gut wall layer by layer and nearby organs.

Endoscopic ultrasound-guided fine-needle aspiration

Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) is a minimally invasive diagnostic procedure in which an endoscope with an ultrasound probe guides a fine needle into pancreatic and nearby lesions.

Endoscopic ultrasound-guided gastroenterostomy

Endoscopic ultrasound-guided gastroenterostomy (EUS-GE) is an endoscopic procedure that creates a stomach-to-small-intestine bypass with a lumen-apposing metal stent, used mainly to relieve gastric outlet obstruction caused by unresectable cancer.

Endoscopic ultrasound-guided liver biopsy

Endoscopic ultrasound-guided liver biopsy (EUS-LB) samples liver tissue through a needle passed down an echoendoscope, reaching both lobes and avoiding vessels and bowel under real-time Doppler.

Endoscopic ultrasound-guided radiofrequency ablation

Endoscopic ultrasound-guided radiofrequency ablation (EUS-RFA) is a minimally invasive procedure that destroys pancreatic and gastrointestinal tumors by delivering radiofrequency energy through a needle electrode under endoscopic ultrasound guidance.

EUS-guided choledochoduodenostomy

EUS-guided choledochoduodenostomy (EUS-CDS) is an endoscopic ultrasound-guided drainage procedure creating a fistula between the common bile duct and duodenal bulb to relieve biliary obstruction when ERCP fails.

EUS-guided fine-needle biopsy

EUS-guided fine-needle biopsy (EUS-FNB) is an endoscopic procedure in which an ultrasound-equipped endoscope guides a needle through the gut wall into lesions, obtaining core tissue for histologic diagnosis.