• K Kinoshita, H Kushi, and N Hayashi.
• Department of Emergency and Critical Care Medicine, Nihon University School of Medicine, Tokyo, Japan. kosaku@med.nihon-u.ac.jp
• Acta Neurochir. Suppl. 2003 Jan 1;86:343-6.

UnlabelledThe aim of this study is to clarify the clinical characteristics of parietal-parasagittal traumatic intracranial hemorrhage (TICH) after mild or moderate traumatic brain injury (TBI). METHODS; Subjects were 105 patients with mild or moderate TBI. The patients with parietal-parasagittal TICH were clinically analyzed based on the initial brain CT findings, hematoma sites and the clinical course as compared to those with TICH at other sites.ResultsHematoma was located in the frontal or temporal lobes in 89.5% of the subjects and the parietal-parasagittal in 10.5%. Ten of the 11 patients suffering parietal-parasagittal TICH had skull fractures (7 depressed and 3 linear) but no depressed fracture observed in patients with frontal or temporal lobe hemorrhage. Neurological deterioration leading to a comatose state more frequently occurred in 63.6% of patients with parietal-parasagittal TICH than in those with frontal or temporal lobe hemorrhage (19.1%, p < 0.01). The incidence of hematoma growth was significantly higher in patients with parietal-parasagittal TICH (63.6%) than in those with frontal or temporal lobe hemorrhage (31.9%, p < 0.05).DiscussionThe incidence of parietal-parasagittal TICH is low, but the risk of neurological deterioration due to hematoma enlargement is significantly high. Parietal-parasagittal TICH may differ clinically from frontal-temporal TICH.

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