EUS Examination Using EndoSound Vision System vs. Standard Echoendoscope

This study compares a new imaging system (EndoSound Vision System) with the standard endoscopic ultrasound (EUS) equipment for examining internal organs and abnormalities in the pancreas, bile duct, lymph nodes, and the lining of the digestive tract. EUS uses a tiny ultrasound probe on the tip of a flexible tube passed through the mouth. **You may be eligible if...** - You are 18 or older - You are already scheduled to undergo an EUS examination for the pancreas, bile duct, lymph nodes, or digestive tract abnormalities **You may NOT be eligible if...** - You are under 18 years old - You cannot provide consent (and no legal authorized representative can do so either) - You are pregnant Talk to your doctor to see if this trial is right for you.