Serial S-100 protein serum measurements related to early magnetic resonance imaging after minor head injury. Case report.
The authors studied 24 patients with a Glasgow Coma Scale score of 14 or 15 and normal computerized tomography scans after minor head injury. The study protocol included obtaining serial measurements of S-100 protein in serum during the first 12 hours after injury and early magnetic resonance (MR) imaging. Four patients (17%) had detectable levels of S-100 protein in serum. The S-100 protein levels were highest immediately after trauma, declining hour by hour. In two patients, MR imaging revealed intracranial contusion. Levels of S-100 protein were not detectable in serum in one patient with MR-verified cerebral contusion, but the first measurements were made late, 6 hours after trauma. The highest serum level of S-100 protein (0.9 microgram/L) was seen in a 73-year-old man 2 hours after injury. Magnetic resonance imaging revealed a contusion of the left cerebellar hemisphere, and the patient suffered permanent sequelae of impaired posture and dizziness.
Ingebrigtsen
T
T
Department of Neurosurgery, University Hospitals of Tromsø, Norway.
Romner
B
B
D000293:Adolescent; D000328:Adult; D000368:Aged; D001930:Brain Injuries / Q000097:blood* / Q000378:metabolism*; D002648:Child; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009418:S100 Proteins / Q000097:blood*
D009418:S100 Proteins