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  • Title: The distance between the falx cerebri and the corpus callosum in patients with bilateral subdural hematomas: A potential measure of disease severity.
    Author: Pedro T, Prisco I, Albuquerque L, Vaz R, Silva PA.
    Journal: Clin Neurol Neurosurg; 2024 Jan; 236():108090. PubMed ID: 38160657.
    Abstract:
    BACKGROUND: We aimed to assess the usefulness of the falx cerebri and the corpus callosum measurements as imaging markers of the evaluation of patients with bilateral subdural hematomas. METHODS: The anterior-posterior and craniocaudal distances between the falx cerebri (FC) and the corpus callosum (CC) were retrospectively measured in 88 head CT scans from 2018 to 2022 from patients with bilateral subdural hematomas and associated with quantitative data and clinical outcomes. Statistical analysis was performed using multivariate regression and receiver operating characteristic curves. RESULTS: Of the 88 patients included, 77.3% were male and the median age of 76.0 years (interquartile range 14.0). The mean craniocaudal and anterior-posterior FC-CC distances were 27.6 ± 6.2 mm and 25.1 ± 6.9 mm, respectively, and showed a positive correlation with hematoma thickness and volume. Both anterior-posterior and craniocaudal FC-CC distances exhibited moderate to good inter-rater reliability. After adjusting for confounders, the craniocaudal FC-CC distance was associated with an increased risk of altered consciousness at admission (OR=1.013; 95% CI 1.001-1.024; p = 0.031), downward displacement of the third ventricle (OR=1.019; 95% CI 1.001-1.038; p = 0.035), and a reduced time to surgery (β = 0.057; 95% CI 0.007-0.107; p = 0.027). CONCLUSION: This study emphasizes that increased FC-CC distances in patients with bilateral subdural hematomas may aid clinical decision-making and are associated with larger hematoma volumes, evidence of descending transtentorial herniation on imaging, and a heightened risk of altered consciousness at admission.
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