血管母细胞瘤的CT和MRI诊断

MR and CT diagnosis of hemangioblastoma

目的 回顾性分析40例经手术病理证实的血管母细胞瘤影像学资料,提高后颅凹血管母细胞瘤的CT、MRI诊断的准确性。方法 40例中32例作CT检查,38例作MRI检查,30例同时作CT、MRI检查。结果 发病年龄20-40岁者占70％(28/40),发生于小脑半球者占75％(30/40)。CT、MRI平扫分别呈囊肿结节型,囊腔型和实质型;增强后以壁结节强化最为多见。部分肿瘤MRI表现可见血管流空征象、瘤内出血、瘤周水肿及脑积水征象。CT对血管母细胞瘤检出率、定位、定性诊断准确率分别为97％、91％、84％;而MRI而分别为100％、95％、89％,二者统计学处理有显著性差异(X^2检验:P<0.05)。结论 血管母细胞瘤的CT和MRI表现具有特征性。

Purpose To improving the diagnostic accuracy of Hemangioblastoma with CT and MRI, retropoctive review the files of Heman-gioblastoma confirmed by surgical pathologically.Methods Among 40 patients,32 cases were evaluated with CT,38 cases with MM and 30 cases with both CT and MM. Results The aging of 28 cases were ranging from 20-40 years old. 30 cases were located at the hemisphaerium cerebelli. On CT and MM plain scans, the lesions were with cysto - nodule type,cyst type,and solid type. On contrast image, the tumor nodules highly enhanced were the most common. Other features, included blood flow void phenomena, hemorrhage, peritumoral edema, hydrocephalus. The sensitivity (detective rate), localization, and properly determination accuracies of CT and MM on Hemangioblastoma were 97 % , 91 % , 84 % respectively for CT and 100 % , 95 % , 89 % respectively for MRI. Conclusion The CT and MM are accurate for detecting Hemangioblastoma.