(a)

(b)

(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)).