RecruitingDRAGON Registry - International Multicenter Registry and Medical Image Bank for Patients With Primarily Unresectable Liver Cancer or Liver Metastases That Underwent Combined Portal and Hepatic Vein Embolization (PVE/HVE) to Increase Future Liver Remnant Before Resection.The DRAGON registry aims to collect data on combined portal and hepatic vein embolization (PVE/HVE) for liver tumors, a technique expected to enhance liver regeneration compared to standard PVE. This collaborative registry focuses on identifying associations between baseline clinical/imaging parameters, clinical outcomes, and safety for patients undergoing PVE/HVE.