Endoscopic Ultrasound (EUS) is a specialised minimally invasive procedure that combines endoscopy with high-frequency ultrasound imaging to produce detailed views of the digestive tract and surrounding organs. Using a specialised ultrasound endoscope, your gastroenterologist can examine the walls of the oesophagus, stomach and bowel, as well as nearby structures including the pancreas, bile ducts, liver and lymph nodes.
Why Is EUS Performed?
- Investigate unexplained abdominal pain or symptoms
- Evaluate abnormalities detected on CT scan, MRI or ultrasound
- Assess pancreatic or bile duct conditions
- Examine submucosal lesions or abnormal growths within the GI tract
- Stage cancers of the oesophagus, stomach, pancreas or rectum
- Assess Barrett's oesophagus and other structural abnormalities
- Evaluate pancreatic cysts or chronic pancreatitis
- Detect bile duct stones or blockages
Diagnostic and Therapeutic Benefits
Diagnosis
- Evaluate tumours and determine depth of invasion
- Stage cancers and assess spread to lymph nodes
- Identify pancreatic lesions, cysts or neuroendocrine tumours
- Assess abnormalities seen on imaging tests
Fine-Needle Aspiration (EUS-FNA)
- Obtain tissue or fluid samples for laboratory analysis
- Diagnose or confirm cancer
- Reduce the need for more invasive surgical procedures
Therapeutic Applications
- Targeted delivery of therapy to specific organs
- Minimally invasive treatment of certain conditions
Preparation, Procedure & Recovery
Patients will need to fast for several hours and adjust certain medications if advised. EUS is performed under sedation. A specialised endoscope with ultrasound capability is gently guided through the mouth or rectum. Most patients resume normal activities shortly after.
Possible Risks
Rare risks may include bleeding, infection, pancreatitis (in certain procedures), perforation, and reaction to sedation.