@minimia, With having any stent placements, just know sometimes they can migrate on their own causing biliary ductal system blockages, which can cause a pancreatitis attack. Pancreatitis attacks can be very painfil & if not treated promptly, it can be fatal. Watch him closely for signs of jaundice, mid upper abdominal pain that radiates into the mid back & sometimes into the shoulder(s), nausea/vomiting, fever, diarrhea & somtimes loss of bowel control. If he has any of these symptoms, seek immediate medical attention at a University Medical Center (teaching hospital), Mayo Clinic Hospitals or Johns Hopkins Medical Center. All other community hospitals do not have the specialists nor the medical equipment for treating these types of patients.