Yttrium 90 Resin Microspheres for the Treatment of Unresectable Colorectal Hepatic Metastases after Failure of Multiple Chemotherapy Regimens: Preliminary Results

Treatment with SIR-Spheres induces responses in patients with advanced unresectable colorectal hepatic metastases after multiple chemotherapy regimens. Inability to deliver the prescribed dose is related to the embolic effect of SIR-Spheres.