侵袭性垂体腺瘤的MRI表现分析  

The Invasive Signs on MRI of Invasive Pituitary Adenomas

作　　者：蓝燚锋 卢烈静 梁碧玲[2] 马云彪[1] 范淑玉[1] 

机构地区：[1]广东省佛山市南海区第六人民医院放射科,广东佛山528248 [2]中山大学附属第二医院放射科,广东广州510120

出　　处：《中国CT和MRI杂志》2015年第3期19-23,共5页Chinese Journal of CT and MRI

摘　　要：目的分析侵袭性垂体腺瘤的的MRI表现。方法回顾性分析48例MRI诊断为垂体大腺瘤患者的病例资料,其中34例经手术、病理证实。结果肿瘤以等T1、等或稍长T2信号为主,增强扫描后均匀或不均匀强化。肿瘤向周围组织侵犯表现为颈动脉包绕,海绵窦受累;鞍底下陷,部分肿瘤突入蝶窦,突破鞍隔等。MRI判断4级受侵19例,3级受侵8例,2级受侵7例,1级受侵9例,0级受侵5例;术中3-4级均证实海绵窦受侵犯,颈内动脉部分或完全受包绕。结论 MRI检查结果与手术具有较好的一致性,可在术前较客观评估垂体腺瘤是否具有侵袭性及其侵袭范围,对手术方式以及术后治疗方案的选择具有重要的临床意义。Objective To explore the invasive signs on MRI of invasive pituitary adenomas（IPA）. Methods A total of 48 patients with giant pituitary adenoma diagnosed by MRI were analyzed, in which, 42 cases were confirmed by surgery. Results The appearance of the tumor was iso-intense on T1WI, iso-intense or high-intense on T2WI, and homogeneously or heterogeneously enhanced after Gd-DTPA injection. MRI findings of invasiveness included encasement of internal carotid artery, invasion of the sella turcica and adjacent bones, involvement of sphenoid sinus and cavernous sinus. 19 cases with grade-4 invasion and 8 cases with grade-3 invasion on MRI were confirmed involvement of cavernous sinus and encasement of internal carotid artery wholly or partly by surgery. Conclusion MRI results have good consistency with the operation. MRI is helpful in evaluating the invasion of pituitary adenomas before operation, which is of great clinical significance for the management of the disease.

关 键 词：侵袭性 垂体腺瘤 磁共振成像 诊断 

分 类 号：R736.4[医药卫生—肿瘤]