Intracranial and spinal fluid collections in superficial siderosis on MRI
Intracranial and spinal fluid collections in superficial siderosis on MRI
(A) T2-weighted axial MRI showing a postoperative posterior fossa fluid collection (arrows). Also note hemosiderin deposition along cerebellar folia and around brainstem (dashed arrows). (B, C) Sagittal T2-weighted spine MRI showing an extensive ventral cervical (B) and thoracic (C) epidural fluid collection (arrows). (D) Sagittal T2-weighted lumbar spine MRI from a patient with SS who had a spinal cord stimulator placed showing a dorsal epidural fluid collection (arrows). (E) Sagittal T2-weighted lumbar spine MRI showing a sacral meningocele and dural ectasia (arrows).
MRI: magnetic resonance imaging; SS: superficial siderosis.