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Tumor embolization is performed before surgical excision. The Gelfoam temporarily occludes the vessels supplying the tumor by facilitating thrombus formation. We report an adverse case of Gelfoam embolization in a patient with a certain vascular anatomy. A 75-year-old man previously diagnosed with lung cancer in 2015 was admitted to Korea University Guro Hospital. He had bilateral arm paresthesia and lower extremity weakness that had progressed for 2 weeks. Cervical spine magnetic resonance imaging revealed a metastatic pathologic fracture of the C6 vertebral body and subsequent cord compression. A C6 corpectomy was scheduled, and preoperative spinal tumor embolization was planned. Angiography revealed that the left deep cervical artery (DCA) and the ipsilateral vertebral artery shared origin. Two Nester coils were positioned at the right distal DCA, one at the left DCA, and two at the left proximal DCA. Gelfoam was infused in each location. However, the patient’s mental status worsened after the left DCA embolization. A diffusion-weighted image showed diffuse cytotoxic edema in the posterior circulation without significant lesions on magnetic resonance angiography. In Gelfoam embolization, special attention is required with neurological monitoring when maneuvering DCA if it has a nearby entrance with a vertebral artery.

An Adverse Case of Spinal Tumor Embolization with Gelfoam in a Patient Whose Vertebral Artery Has Shared Origin with Ipsilateral Costocervical Trunk