Transarterial embolization (TAE) of sacral giant cell Tumor (GCT) using spherical parmanent embolic material superabsorbant polymer microsphere (SAP-MS)

PURPOSE We retrospectively evaluated our experience of transcatheter arterial embolization (TAE) of the sacral GCT with use of a spherical permanent embolic agent, superabsorbant polymer microsphere (SAP-MS) as an alternative treatment modality. MATERIALS AND METHODS From 1997 to 2011, four patients with sacral GCT were treated with TAE. In all cases, SAP-MS was used as an embolic material. The effects of TAE were evaluated for improvement of patients' symptoms, radiographic change such as vascularity of tumor, size of tumor and occurrence of reossification. RESULTS Of the four patients, three responded favorably to TAE with improvement in pain and neurologic symptoms with long-term follow up. Diminished vascularity, stabilization of tumor size and reossification were shown radiographically. One patient died because of tumor growth 26 months after the initial TAE. CONCLUSION In sacral GCT, TAE using SAP-MS might be useful for symptom improvement, reossification of the lesion and stabilization of tumor size.