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Fig. 1E 66-year-old woman with recurrent sacrococcygeal chordomas.
A-C are T2-weighted transverse images. Follow-up images
D-F are T1-weighted fat-saturated contrast-enhanced with
high-field-strength MRI. In second control 4 months after ablation, region
shows scarring and residual edema (arrow). Necrotic areas are no
longer detectable in pararectal region. Alterations of surrounding structures
are regressive in obturator muscle.