非典型侵袭性垂体瘤的MR表现及误诊分析（附20例报告）  

Analysis of misdiagnosis and MR findings of atypical invasive pituitary adenoma

作　　者：林亚南[1] 程敬亮[1] 白洁[1] 孙梦恬[1] 王斐斐[1] 

机构地区：[1]郑州大学第一附属医院磁共振科,河南郑州450052

出　　处：《实用放射学杂志》2014年第4期568-570,共3页Journal of Practical Radiology

摘　　要：目的：探讨非典型侵袭性垂体瘤的磁共振表现及误诊分析。方法复习20例经手术病理证实误诊为脊索瘤或脑膜瘤的非典型侵袭性垂体瘤的磁共振表现。结果本组20例 MR T1 WI 表现为等或稍低信号,T2 WI 为等或稍高信号；增强扫描为不均匀明显强化。动态增强曲线均表现为快速强化型。9例侵犯双侧海绵窦,垂体及垂体柄显示不清。其中12例向鞍上及前颅窝底生长者误诊为脑膜瘤；8例斜坡破坏者误诊为脊索瘤。结论侵袭性垂体瘤的 MR表现多种多样,应根据各种征象综合分析,以避免误诊。Objective To investigate MR findings and analysis of misdiagnosis of atypical invasive pituitary adenoma.Methods The MR findings of twenty cases of atypical invasive pituity adenomas confirmed by pathology were reviewed ,which were misdiag-nosed as chordomas or meningiomas.Results All the twenty cases showed iso-or slightly hypo-signal on T1 WI,iso-or slightly hy-per-signal on T2 WI;Enhanced scan displayed heterogeneous enhancement.The dynamic enhancement curve showed rapid enhance-ment phase.The bilateral cavernous sinuswere infringed in nine cases,in which the pituity and pituity stalk were not well seen. Among the twenty cases,twelve cases with suprasellar and anterior cranial fossa extension were misdiagnosed as meningiomas;eight cases with clival destruction were misdiagnosed as chordomas.Conclusion The MR features of atypical invasive pituity adenomas are various.In order to avoid misdiagnosis,a comprehensive analysis should be based on a variety of signs.

关 键 词：非典型侵袭性垂体瘤 磁共振成像 误诊 

分 类 号：R739.41[医药卫生—肿瘤] R445.2[医药卫生—临床医学]