脊髓髓内室管膜瘤和星形细胞瘤的MRI诊断15例临床分析

目的 评估脊髓髓内室管膜瘤和星形细胞瘤的MRI表现。方法 回顾分析经手术病理证实的15例室管膜瘤和10例星形细胞瘤的MRI表现。结果 两者的平扫MRI表现类似，即疾病变节段脊髓增粗，T1WI呈低信号，边界欠清，T2WI呈高信号。16例患者肿瘤头尾侧可见囊变。6例室管膜瘤行增强T1WI，肿瘤实体部分都均匀强化。4例星形细胞瘤行增强T1WI，1例肿瘤实体部分均匀强化，1例欠均匀强化，2例无强化。结论 MRI有助于两者的诊断及其鉴别诊断。

Diagnosis of intramedullary spinal cord ependymomas and astrocytomas using magnetic resonance imaging: analysis of 15 cases]

OBJECTIVE: To evaluate the magnetic resonance imaging (MRI) features of intramedullary spinal cord ependymomas(INSE) and astrocytomas. METHODS: Retrospective analyses of the MRI images were conducted in 15 cases of INSE and 10 cases of astrocytoma. RESULTS: MRI appearances were similar in the 2 types of neoplasms, both showing enlargement of the involved spinal cord segments, low signal and blurred boundary on T1-weighted imaging, and high signal on T2-weighted imaging. Peritumoral cyst formation were found in 16 patients. Contrast enhancement was homogeneous in 6 cases of ependymomas and 1 of astrocytoma, heterogeneous in 1 astrocytoma case, and no enhancement in 2 astrocytoma cases. CONCLUSION: MRI is helpful in the diagnosis and differential diagnosis of INSE and astrocytomas.