Interventional treatment for malignant obstructive jaundice The main purpose of interventional treatment for malignant obstructive jaundice is to drain bile, reduce bile duct pressure, and reduce the backflow of harmful factors such as bile salts or bacterial toxins into the bloodstream to facilitate recovery of liver function and subsequent treatment. The interventional treatment methods used, percutaneous transluminal biliary drainage (PTBD) and biliary stent placement (PTBS), involve the use of a dilated intrahepatic bile duct with percutaneous transluminal puncture, the application of guidewire and catheter techniques to probe through the narrowed, occluded obstructed segment, and the placement of a drain or metal stent after determining the site and length of the narrowed segment. By placing the stent across the obstructed part of the bile duct, the bile is diverted into the digestive tract for the purpose of unblocking the bile duct. The specific operation is to insert a guidewire into the intrahepatic bile duct through the percutaneous hepatic puncture and pass it through the obstruction site to reach its lower part, then send in a balloon to gradually dilate the stenosis, and finally place the stent along the guidewire to the obstruction site, so that it crosses the obstruction site and the two ends are located at the proximal and distal ends of the obstruction site, so that the bile at the distal end can be drained to the proximal end through the lumen of the stent to realize the in vivo drainage of bile, which has the advantage of no bile loss and no effect on the physiological function of bile. The advantage of this treatment is that there is no bile loss and the physiological effect of bile is less affected, and it does not interfere with the patient’s daily life. The treatment is less invasive and has reliable results. Our center has completed more than 1000 cases of biliary malignant obstruction drainage surgery, with a success rate of more than 95%.