A High CSF Signal on FLAIR: It Is Not Always Blood.

We describe a patient with progressive neurologic deficit due to middle cerebral branch occlusion. Temporary partial balloon occlusion of the abdominal aorta led to an increased signal in the subarachnoid space on fluid-attenuated inversion recovery images with no evidence of subarachnoid hemorrhage. After spontaneous recanalization, the increased signal of the subarachnoid space returned to normal.

Peripheral nervous system involvement in multiple sclerosis.

Objective: To investigate possible peripheral nervous system (PNS) affection in patients with multiple sclerosis (MS) by standard nerve conduction velocity (SNC) and pain-related evoked potentials (PREP), a novel electrophysiological method for diagnosing small fibre neuropathy.

Background: Former neuropathological and electrophysiological studies demonstrated subtle PNS affection in MS, but routine measurements are mostly normal. Small fibre polyneuropathy is associated with several autoimmune diseases but has not been investigated in MS yet.