Pancreatic cysts are common, and some pancreas cysts have malignant potential. Usual
treatment of these cysts is either observation or surgical removal of part or all of the
pancreas. Minimally invasive treatment via endoscopy has been described, using endoscopic
ultrasound (EUS) guided ethanol injections. Such studies exclude cysts that communicate with
the main pancreatic duct, to avoid burning the main pancreatic duct with ethanol. In this
study, pancreas cysts communicating with the main pancreas duct are treated with ethanol via
endoscopic retrograde cholangiopancreatography (ERCP) and/or EUS.