stomach: Gastrostomy (Percutaneous endoscopic gastrostomy) - Gastrectomy - Gastric bypass surgery - Gastroenterostomy - Nissen fundoplication
lower GI: Duodenal switch - Colectomy - Colostomy - Ileostomy - Jejunoileal bypass - Appendicectomy
gallbladder/bile duct: Endoscopic retrograde cholangiopancreatography - Percutaneous transhepatic cholangiography - Cholecystectomy