The authors report a brand new component for embolization composed by a polivinil acetate core and a polivinil-alcohol coat in a microspherical form ( Spherus®-First Line Brasil) used as preoperative management in three patients with renal tumors in an attempt to reduce the size of the tumors and to avoid hemorrhagic complications during the operations. This new component was developed in COPPE/UFRJ laboratories. The preoperative arterial embolization with this new component caused strong ischemia in the tumor tissue , facilitating the operative procedure.
Animal experimentation; Embolization, therapeutic; Polyvinyl alcohol; Radiology, interventional
