Figure 3b. Complete response of cervical carcinoma after radiation therapy. (a) Sagittal T2-weighted fast spin-echo MR image (3,500/90) shows a large high-signal-intensity mass (arrows) in the uterine cervix. (b) Follow-up T2-weighted fast spin-echo MR image (3,500/90) obtained 4 months later shows a complete response with reconstitution of the zonal anatomy of the cervix. Fatty replacement changes are seen in the pelvic bone marrow.