[Transvascular percutaneous intervention in tumors: principles and indications]

The techniques of interventional radiology in cancer therapy have been known for several years. Like other radiologic specialties it has benefited from rapid developments in imaging and catheter technology. The indications for percutaneous vascular therapy of tumors are generally palliative and have a curative intention only in rare conditions. Interventional techniques are useful in therapy of tumor bleeding and preoperatively to lessen the risk of hemorrhage. They effectively reduce tumor bulk and provide symptomatic relief. The techniques, indications, results and complications of transvascular therapy of tumors are described.