颅内血管外皮细胞瘤CT和MRI影像诊断

lntracranial hemangiopericytoma with the CT and MRI imaging diagnosis

目的分析颅内血管外皮细胞瘤的CT和MRI影像表现。方法选取经手术病理证实的血管外皮细胞瘤8例,男6例,女2例,所有病例均进行了CT和MRI检查。结果回顾分析其CT和MRI影像表现有如下特点,CT:(1)肿瘤形态多呈不规则分叶状;(2)肿瘤表现为等低或等低高混杂密度,增强扫描肿瘤通常为明显不均匀强化;(3)肿瘤临近骨质可有破坏,但无增生硬化;(4)肿瘤多数与硬膜窄基相连。MR:(1)肿瘤外形不规则分叶状;(2)肿瘤T1T2信号混杂,增强后肿瘤强化明显但不均匀;(3)肿瘤内常可见血管流空影;(4)脑膜尾征少见。结论颅内血管外皮细胞瘤有比较典型的CT和MRI影像特点,结合临床表现有助于术前正确诊断。

objective To analyse the intracranial hemangiopericytoma with CT and MRI imaging performance.Methods Select pathologically confirmed hemangiopericytoma in 8 cases,6 males and 2 females,all cases were conducted CT and MRI inspection.Results Review its CT and MRI imaging performance has the following characteristics,CT：（1） Tumor form an irregular more lobulated;（2） Tumor performance for low or high such as low hybrid density,enhancing scanning tumors generally is obvious uneven strengthened;（3）Tumors near bone can have damage,but no hyperplasia hardening;（4） Tumors most connected with tough membranous narrow base.MR：（1） Tumors appearance is irregular the lobulated;（2） Tumors T1 T2 signal confounding, enhance the tumour after strengthening obvious but uneven;（3）Often seen within the tumor blood flow air impacto（4） Dural tail sign rare.Conclusion Intracranial hemangiopericytoma with a comparatively typical CT and MRI imaging features,combined with clinical manifestations help preoperative accurate diagnosis.