Superficial siderosis


Superficial siderosis (SS), with evidence of prior trauma and spinal surgery.  No other obvious source of recurrent hemorrhage was identified.

Cerebellar atrophy is often present in SS, especially at the superior vermis, presumably due to where preferential hemosiderin deposition.

An extensive longitudinal extra-arachnoid intraspinal fluid filled collection is frequently seen in patients with idiopathic SS. In this case, this may be associated with a dural defect at the level of the cervical fusion.