Perivascular spaces, or Virchow-Robin spaces (VRS) are extensions of the subpial space surrounding perforating arteries and emerging veins from the cerebral cortex (1). Lenticulostriate VRS follow the path of the homonymous arteries as they enter the basal ganglia through the anterior perforate substance. They are commonly seen around the anterior commissure in normal subjects (2). High-convexity VRS follow the path of penetrating cortical arterioles and are usually detected at the level of white matter. On conventional MR imaging scans they are detectable in only 13% of healthy adults and in only 3% of children between 20 months and 16 years of age (3, 4). While small (< 2 mm in diameter) VRS represent an anatomic variant (3), large VRS have been associated with age, dementia, and incidental white matter lesions (3). An increased number of high-convexity white matter VRS has been described in patients with multiple sclerosis and attributed to early inflammation (5). In addition, brain trauma studies in rodents have demonstrated an inflammatory infiltrate temporally and anatomically associated with early breakdown of the blood-brain barrier (BBB) breakdown (6, 7). More recently, a strong perivascular and parenchymal posttraumatic inflammatory reaction was confirmed in contused human brain tissue (8).