颅骨原发脑膜瘤CT和MRI特征

Primary lntraosseous Meningioma：CT and MRI Appearance

目的：研究原发于颅骨的脑膜瘤的CT和MRI特征,探讨其对临床诊断治疗的价值.方法：分析在我院接受诊治并经病理证实的5例原发于颅骨的脑膜瘤的影像表现,并复习相关文献.5例患者均进行了CT平扫,3例患者进行了MRI平扫,其中2例随后进行了MRI增强检查.结果 ：3例显示骨质溶骨性损害,其中2例Gd-DTPA增强后显示病变区明显强化.2例表现为成骨性损害.结论： CT和MRI检查能清楚显示颅骨原发脑膜瘤病灶位置、病灶内部及与周围组织关系,有助于判断肿瘤良恶性,对术前诊断和指导手术有重大意义.颅骨脑膜瘤影像表现缺乏特征性,需要与其它骨的肿瘤及肿瘤样病变鉴别.

Objective： To study CT and MR imaging manifestations of primary intraosseous meningioma, and to evaluate the efficacy of CT and MR imaging in diagnosing primary intraosseous meningioma. Methods： 5 cases of primary intraosseous meningioma with CT and MR imaging were reviewed and the relevant literature is reviewed. All 5 patients with CT scanning, 3 patients were examined with MRI. Results：3 patients shows the lesion of osteolytie , 2 patients following gadolinium injection demonstrated the prominent and homogeneous enhancement of the lesion. 2 patients showed the lesion of osteoblastic. Conclusions：Primary intraosseous meningioma on CT and MR imaging shows the location and the lesion （ osteolytic or osteoblastic ） of the tumor, help to Identification of benign and malignant, demonstrate great significance for the preoperative diagnosis and guiding surgery.. Intrraosseous meningioma may appears varied on CT and MR imaging , so it is required differential diagnosis for other cranial lesions, these include tumor and tumor--like lesion.