745430.fig.004a
(a)
745430.fig.004b
(b)
745430.fig.004c
(c)
Figure 4: Hypointensities around the brainstem and all along the spinal cord are depicted in both sagittal MRI STIR-adquired images ((a) and (b)). The thecal cul-de-sac is occupied by iron-containing debris (b). There are also signs of arachnoiditis such as lumbar nerve root clumping ((b) and (c)).