If a liver cancer develops a blood clot, we consider him to be stage 4A. It's an advanced stage, but it hasn't metastasized anywhere else. If it's a thrombus in the portal vein, we can do seed implantation. We can implant seed into the thrombus in your portal vein to control the tumor and let the blood vessel reopen. Or let the thrombus not aggravate progressively. If it gets worse, there will be serious complications.