The malignant degree of cholangiocarcinoma is very high. Your wish is "I really want my father to live a few more years." To tell the truth, this ideal may be difficult to achieve;

Seeing your last question, I don't comment on the "best answer". I want to say that western medicine is not omnipotent, and neither is Chinese medicine.

There are three reasons for your father's obstruction after PTCD. First, bile crystal deposition blocks the drainage tube, second, tumor growth oppresses or directly invades the bile duct stent, and third, the drainage tube shifts or falls off. At present, the treatment method is to go to the hospital where PTCD was originally done, find the interventional doctor and let him handle it. Generally, the contrast agent is injected from the catheter to see what the situation is, and then the corresponding treatment is done.

You can ask.