Rokni-Yazdi Hadi, Sotoudeh Houman
Department of Radiology and Imaging, Imam Khomeini Hospital, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
Eur J Radiol. 2006 Oct;60(1):42-5. doi: 10.1016/j.ejrad.2006.04.003. Epub 2006 May 3.
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.
本研究的目的是阐明在对比增强磁共振成像（MRI）中，位于颅周肿块旁的线性脑膜增厚和强化即“硬膜尾征”（DTS）的患病率、相关肿瘤谱及其诊断价值。在这项于2002年至2005年进行的前瞻性描述性横断面研究中，110例经影像学证实有颅内病变且无既往颅内手术史的患者被转诊至我院神经外科门诊进行手术切除。所有患者均接受了1.5T MR系统的成像检查，包括注射对比剂前后的检查。12例患者被排除在研究之外，最终对98例患者进行了“硬膜尾征”的评估。98例颅内肿块患者中有22例（22.44%）出现“硬膜尾征”（18例脑膜瘤、2例垂体腺瘤、1例原发性脑淋巴瘤和1例真菌性脑脓肿）。经活检证实为脑膜瘤的患者中有58%表现出“硬膜尾征”。总之，我们发现“硬膜尾征”在脑膜瘤诊断中的敏感性为58.6%，特异性为94.02%。
