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  • Title: Prevalence of "dural tail sign" in patients with different intracranial pathologies.
    Author: Rokni-Yazdi H, Sotoudeh H.
    Journal: Eur J Radiol; 2006 Oct; 60(1):42-5. PubMed ID: 16675180.
    Abstract:
    The purpose of this study is to clarify the prevalence, spectrum of associated tumors and the diagnostic value of the linear meningeal thickening and enhancement adjacent to a peripherally located cranial mass "dural tail sign"(DTS) in contrast enhanced magnetic resonance imaging (MRI). In this prospective descriptive cross-sectional study conducted from 2002 to 2005, 110 patients with imaging-proven intracranial lesions and no history of previous intracranial surgery were referred to the neurosurgery clinic of our hospital for surgical resection. All underwent imaging with a 1.5 T MR system with and without contrast injection. Twelve patients were excluded from our study and finally 98 patients were evaluated for the presence of "dural tail sign". Twenty-two of 98 patients (22.44%) with intracranial masses exhibited the "dural tail sign" (18 meningiomas, 2 pituitary adenomas, 1 primary cerebral lymphoma and 1 fungal brain abscess). Fifty-eight percent of the patients with biopsy-proven meningioma were observed to show "dural tail sign". In conclusion, we found the "dural tail sign" to have a sensitivity of 58.6% and specificity of 94.02% in diagnosis of meningioma.
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