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目的探讨鞍旁富血液供应实性肿块的MRI影像特点,提高对其诊断水平。方法选择经手术病理组织证实鞍旁富血液供应实性肿块患者27例,其中男性12例,女性15例;年龄23~68岁,平均年龄41.0岁。术前行MRI平扫和增强扫描,分析其MRI表现。结果 27例中,海绵状血管瘤6例,呈鞍内向鞍旁生长的哑铃状或葫芦形肿块,T1加权成像(T1WI)呈低信号,T2加权成像(T2WI)呈高信号;增强后病变强化显著,强化均匀或不均匀,可见延迟强化。脑膜瘤13例T1WI呈等或稍低信号,T2WI呈等或稍高信号;增强后可见明显强化,可见脑膜尾征。侵袭性垂体瘤8例累及鞍旁,颈内动脉海绵窦段被包绕,T1WI呈等或稍低信号,T2WI呈等或稍高信号,均匀强化。结论根据鞍旁富血液供应的血管瘤、脑膜瘤及侵袭性垂体瘤MRI信号特点、边缘和与邻近组织的解剖关系,结合有关临床表现,可做出正确诊断。
Objective To investigate the MRI features of the solid mass in the parasellar blood supply and improve its diagnostic value. Methods Twenty-seven cases of solid tumors with parasellar blood supply were confirmed by surgical pathology. There were 12 males and 15 females, aged from 23 to 68 years with a mean age of 41.0 years. Preoperative MRI plain scan and enhanced scan, analysis of MRI performance. Results Twenty-seven cases were cavernous hemangiomas with dumbbell-shaped or gourd-shaped tumors with saddle-side growth in the saddle. T1WI showed a low signal and T2-weighted imaging showed a high signal; enhanced lesion enhanced Significantly, to enhance uniform or uneven, visible delayed strengthening. 13 cases of meningioma T1WI was equal or slightly lower signal, T2WI was equal or slightly higher signal; enhanced significantly enhanced visible, visible meningeal tail syndrome. Invasive pituitary tumor in 8 cases involving the parasellar, internal carotid artery cavernous sinus were wrapped, T1WI was equal or slightly lower signal, T2WI was equal or slightly higher signal, uniform enhancement. Conclusions According to the characteristics of hemiglioma, meningioma and invasive pituitary adenoma, the anatomic relationship with adjacent tissues and the clinical manifestations of hemangiomas, meningiomas and invasive pituitary tumors, correct diagnosis can be made.