髓内肿瘤的MRI诊断与临床

目的：探讨MRI对不同病理类型髓内肿瘤的诊断与鉴别诊断，评价其临床运用价值。材料与方法：搜集资料完整的3l例经MRI诊断，手术病理证实的髓内肿瘤，室管膜瘤16例，星形细胞瘤9例，畸胎瘤4例，血管母细胞瘤和神经母细胞瘤各l例。就不同病理类型髓内肿瘤术前MRI诊断与术后复查MRI结果对照分析。结果：室管膜瘤往往表现为境界清晰的结节影，空调范围大，术后残余及复发率低(2／16)，星形细胞瘤形态不规则，境界不清晰，病变周围或内部常有囊变区，手术残余及术后复发率均高(9／9)。结论：利用MRI检查，尤其是增强扫描能够鉴别髓内肿瘤的病理类型，评估其手术完全切除的可能性。

MRI Diagnosis of Intramedullary Tumors Combined with clinic

Objective: To investigate MRI diagnosis and differential diagnosis of intramedullary tumors and to evaluate its clinical appication. Materials and Methods: MRI findings of 31 cases. with surgically and pathologically-proved intramedullary tumors were collected. The tumors included ependymoma(n=16), astrocytoma (n=9),teratoma (n=4),hemagioblastoma (n=1), neuroblastoma (n=1). Results: In ependimoma,the mass had clear margin, and long-raned of cavity. Surgical residual and rate of recurrence were low(12.5%).In astrocytoma, the lesion was irregular, had poorlyedfined border and cystic change. Surgical residual and rate of recarrence were high(100%). Conclusion: MRI examination, especially with the administration of Gd-DTPA, could differentiate the pathological type of intramedullary tumors, and access the possibility of resection.