颅内血管周细胞瘤与Ⅱ级脑膜瘤MRI表现分析与鉴别

MRI appearances analysis and identification of intracranial hemangiopericytoma and gradeⅡmeningioma

目的分析颅内血管周细胞瘤与Ⅱ级脑膜瘤磁共振成像(MRI)表现并加以鉴别,以降低误诊率,提高诊断水平。方法选取我院2017年1月至2020年12月经手术病理证实的颅内血管周细胞瘤21例,Ⅱ级脑膜瘤39例。患者均行MRI检查,对检查情况进行分析。结果颅内血管周细胞瘤形态不规则,病灶内信号不均匀,有坏死囊变9例,有瘤内流空血管影17例,有瘤周水肿9例。病灶邻近颅板增厚1例,颅骨骨质破坏3例,脑膜尾征4例。Ⅱ级脑膜瘤形态尚规则,有坏死囊变12例,有瘤内流空血管影16例,有瘤周水肿33例。病灶邻近颅骨增生、硬化19例,脑膜尾征32例。结论颅内血管周细胞瘤与Ⅱ级脑膜瘤的MRI表现具有特征性,可从瘤周水肿、脑膜尾征等方面加以鉴别。

Objective To analyze the magnetic resonance imaging(MRI)appearances of intracranial hemangiopericytoma and gradeⅡmeningioma,and to identify them in order to reduce the misdiagnosis rate and improve the diagnostic level.Methods Twenty-one cases of intracranial hemangiopericytoma and 39 cases of gradeⅡmeningioma confirmed by surgical pathology in our hospital from January 2017 to December 2020 were selected.All patients underwent MRI examination,and the examination results were analyzed.Results The shape of intracranial hemangiopericytoma were irregular,and the signal in the lesion was uneven.There were 9 cases of necrotic cystic degeneration,17 cases of intratumoral flow-empty vascular shadow,and 9 cases of peritumoral edema.There were 1 case of adjacent skull plate thickening,3 cases of skull bone destruction and 4 cases of dural tail sign.The shape of gradeⅡmeningioma were regular.There were 12 cases of necrotic cystic degeneration,16 cases of intratumoral flow-empty vascular shadow,and 33 cases of peritumoral edema.There were 19 cases of adjacent skull hyperplasia and sclerosis,and 32 cases of dural tail sign.Conclusion The MRI appearances of intracranial hemangiopericytoma and gradeⅡmeningioma are characteristic,which can be distinguished from peritumoral edema and dural tail sign.