摘要
目的:探讨大型垂体腺瘤束腰征的特点及其对诊断大型垂体腺瘤的价值。方法:回顾性分析140例鞍区肿瘤的MRI,其中大型垂体腺瘤65例,颅咽管瘤40例,脑膜瘤35例。观察其是否具有束腰征、束腰征特征及是否侵犯海绵窦,采用χ2检验两个率之间差异的显著性。结果:56例大型垂体腺瘤具有束腰征,且100%均侵犯海绵窦。2例颅咽管瘤和1例鞍区脑膜瘤可见束腰征,但未见侵犯海绵窦。93.8%大型垂体腺瘤侵犯海绵窦,颅咽管瘤及脑膜瘤侵犯海绵窦的概率分别是2.5%、20%。结论:束腰征可作为诊断大型垂体腺瘤的重要依据,大型垂体腺瘤比其它鞍区肿瘤更易侵犯海绵窦。
Objective：To study the features and diagnostic value of the hourglass sign in large pituitary adenomas. Methods：The MR scans obtained from 140 patients with tumors in the sellar region,including 65 cases of pituitary macroadenoma,40 cases of craniopharyngioma and 35 cases of meningioma were retrospectively reviewed. The features of the hourglass sign and cavernous sinus invasion were intentionally observed. A Х^3 test was used to evaluate the differences between significance rates. Results：Cavernous sinus was invaded by 56 pituitary macro-adenomas with hourglass sign,while no cavernous sinus invasion could be found in the only 2 cases of craniopharyngioma and 1 case of meningiomas with hourglass sign. Cavernous sinus invasion was depicted in 93.8 % of the pituitary macro-adenomas, 5 % of the craniopharyngiomas and 20 % of the meningiomas. Conclusion.. Hourglass sign might be the most important sign of diagnosing pituitary macro-adenomas. Cavernous sinus invasion was more frequently found in pituitary macro-adenomas than in other sellar region tumors.
出处
《放射学实践》
2006年第11期1108-1110,共3页
Radiologic Practice
关键词
磁共振成像
大型垂体腺瘤
束腰征
Magnetic resonance imaging
Large pituitary adenoma
Hourglass sign
