The recurrence is always more difficult to treat than
the primary tumor, thus its occurrence should be avoided
as much as possible. Serial SAE seems to be a treatment
option even if the tumor affects the mobile spine. This
procedure was originally described for sacral tumors by Lin
et al. in 2002 [34]. He treated 18 patients with GCT of the
sacrum with a series of selective intra-arterial embolization
as sole treatment. Half of the patients showed a durable
radiographic response at long-term followup. Later Hosalkar
et al. published in 2007 [35] the successful treatment of