This technique is used for the removal of bile duct stones without surgery or for the treatment of bile duct tumors. The stones are treated with ERCP by displaying the main bile duct and intrahepatic branches.
Percutaneous endoscopic gastrostomy (PEG) is used to feed the patient through abdomen in elderly patients who can not eat in cases of obstruction due to some benign or malignant masses or neurological diseases.