Lloyd G A, Phelps P D
Clin Otolaryngol Allied Sci. 1986 Aug;11(4):247-59. doi: 10.1111/j.1365-2273.1986.tb01926.x.
Thirty patients with histologically verified angiofibromata have been investigated over a period of 14 years. They have been examined by conventional radiographic techniques and computerized tomography, and more recently 4 patients have been scanned by magnetic resonance. CT studies of patients with small tumours have shown that the point of origin is at the sphenopalatine foramen. The tumour enlarges the foramen and erodes bone locally giving rise to characteristic signs both on plain X-ray and on CT scan. The value of magnetic resonance imaging is assessed and it is concluded that in the presence of the characteristic 'antral sign' on plain X-ray, 3-plane magnetic resonance is now the method of choice to show the extent of the tumour pre-operatively. Magnetic resonance can also show the vascular nature of the angiofibroma by the demonstration of large vessels, shown as dark areas of negative signal within the tumour mass. With this new method of investigation available, angiography should now only be performed if embolization is deemed necessary prior to surgical removal of the angiofibroma.
在14年的时间里，对30例经组织学证实的血管纤维瘤患者进行了研究。他们接受了传统的放射学检查技术和计算机断层扫描，最近有4例患者进行了磁共振扫描。对小肿瘤患者的CT研究表明，肿瘤起源于蝶腭孔。肿瘤使该孔扩大并局部侵蚀骨质，在普通X线片和CT扫描上均产生特征性表现。对磁共振成像的价值进行了评估，得出的结论是，在普通X线片上出现特征性“窦征”的情况下，三平面磁共振成像现在是术前显示肿瘤范围的首选方法。磁共振成像还可以通过显示大血管来显示血管纤维瘤的血管性质，这些大血管在肿瘤块内表现为信号阴性的暗区。有了这种新的检查方法，现在只有在认为手术切除血管纤维瘤前有必要进行栓塞时才应进行血管造影。
