In some cases, a child may need an ERCP (endoscopic retrograde cholangiopancreatography, pronounced koe-LAN-jee-oh-PAN-kree-ah-TOG-rah-fee) to remove gallstones that have fallen out of the gallbladder. In an ERCP, the surgeon passes a lighted scope through the child’s mouth, past the stomach and into the upper small intestine (duodenum). This way, the doctor can see the bile duct entering the intestine. Small instruments can be passed through the scope and used to remove the gallstones. An ERCP often helps doctors avoid doing a larger operation on your child. If your child needs an ERCP, it most likely will be done on a different day from the gallbladder removal surgery.