About EUS - What is EUS?

Endoscopic Ultrasound ( EUS )allows the clinician to image organs, vascular structures, and lymph nodes by utilizing an ultrasound probe that resides on the end of an upper intestinal endoscope. It is the most sensitive imaging test available to detect pancreatic masses. The major utility of EUS in pancreatic and bile duct tumors is: 1.Staging of the tumor and 2.Providing a tissue diagnosis when necessary

Endoscopic Ultrasound (EUS) imaging alone cannot definitively discriminate between a benign and malignant mass. However, one can Obtain a tissue diagnosis by utilizing EUS guided Fine Needle Aspiration(FNA). FNA is accomplished by passing a thin needle into The biopsy channel of an ultrasound scope and into the mass in question while directly viewing the biopsy needle via ultrasound. The cells obtained with FNA are reviewed by a pathologist for a tissue diagnosis.

EUS Staging is useful in determining whether a tumor appears to be surgically removable and helps in planning the course of therapy.

EUS may also be of benefit in patients with chronic pain secondary to Nerve involvement of the tumor. A celiac nerve block can be performed By using a fine needle to deliver the medication to the celiac plexus.