垂体瘤的影像学诊断及评优  

Radiological diagnosis and best choose of pituitary adenomas

作　　者：杨东奎[1] 郑雷[1] 孙跃龙[1] 李志军[1] 

机构地区：[1]解放军第251医院,河北张家口075000

出　　处：《医疗卫生装备》2008年第1期88-90,共3页Chinese Medical Equipment Journal

摘　　要：目的:探讨如何运用影像学检查方法对垂体瘤做出正确及早期的诊断。方法:对42例经手术和病理证实的垂体瘤病例进行回顾性分析,研究其临床及影像学表现。结果:大腺瘤(直径大于10mm)30例,以无功能性腺瘤多(占63.3%),微腺瘤(直径不大于10mm)12例,以功能性腺瘤多(占91.7%)。微腺瘤直接征象为垂体内CT低密度或MRI(T1W1)低信号。CT和MRI增强后将显著提高低密度或低信号的显示率。大腺瘤增强后均有不同程度的强化。CT和MRI增强对于显示肿瘤的部位、大小、范围、鞍旁结构的受侵情况均有很高的价值。结论:对临床疑似病例,MRI行Gd-DTPA增强扫描可作为诊断垂体瘤的首选影像检查方法。Objective To explore how to select radiological examination for correctly and early diagnosing the pituitary adenomas, Methods 42 pituitary adenomas cases in our hospital were analyzed, which had been authenticated by operation and pathology, and their clinical sympotom and radiological imaging were studied. Results In 42 cases, there were 30 macroadenomas（〉lOmm in diameter） which were mostly non-functional ones（63.3%）, and 12 microadenomas（≤ lOmm in diameter） which were mostly functional ones （91.7%）. Only macroadenonas had abnormal imaging in DR, DSA, while microadenomas had no change in above radiological examinations. Microadenomas appeared in low density on CT or hypointensity in MRI as the direct signs, and CT, MRI contrast enhancement raised its display rate greatly. Macroadenomas showed various contrast in the post enhancement CT or MRI. Contrast enhancement of CT or MRI were capable of delineating size, location, extent of the tumor and the remaining intact pituitary tissue. Conclusion MRI Gd- DTPA contrast enhancement scaning is the first-selecting method to diagnose the pituitary adenomas especially the clinical suspected cases.

关 键 词：垂体瘤 影像学检查 对比增强 CT 磁共振成像 

分 类 号：TH774[机械工程—仪器科学与技术]