Endoscopic ultrasound combines the use of an ultrasound probe and an endoscope. It allows our doctors to evaluate abnormalities beyond or deep within the lining of the gastrointestinal tract by utilising sound waves. Therefore, EUS is frequently used to evaluate abnormal growths which have been identified on other scans or at prior endoscopy.

During EUS, ultrasound waves enable the doctor to visualise structures through the abdominal wall in real time. This allows examination of internal structures such as the gallbladder, bile duct, pancreas, lymph nodes and adrenal glands. In addition, abnormal growths or cysts can be further characterised and the presence of stones (in the gallbladder, bile duct, pancreatic duct) may be identified.

EUS can be used to obtain tissue samples from any organ in close proximity to the digestive tract. This includes lesions or lymph nodes within the chest/abdomen. Samples are obtained as cells or tiny strips and processed in the laboratory, providing doctors with valuable information.

In addition, EUS can be used to assess the degree of spread of cancer before surgery, drain cysts and perform pain relieving nerve blocks in patients with pancreatic cancer or chronic pancreatitis. In those who experience fecal incontinence, EUS can be used to assess the muscles of the anus for injury.