MRI检查在鼻咽癌颅底侵犯中的应用价值  

Skull Base Erosion in the Advanced Stage Nasopharyngeal Carcinoma:Imaging Features of MRI

作　　者：陈树平[1] 赵波沣[1] 胡元明[1] 魏玮[1] 吕涵青[1] 罗振东[1] 

机构地区：[1]深圳市中医院放射科,广东深圳518033

出　　处：《现代医用影像学》2013年第3期159-161,共3页Modern Medical Imageology

基　　金：深圳市科技计划项目编号20113384

摘　　要：目的:探讨鼻咽癌(NPC)颅底侵犯的MRI表现特征,评价MRI检查对其的应用价值。材料与方法:回顾性分析经病理证实并有明确颅底或颅神经受损临床症状的40例鼻咽癌患者的MRI表现。所有患者均行MR平扫及增强扫描。结果:侵犯翼突(包括翼腭窝)16例,斜坡11例,卵圆孔(包括蝶骨大翼)13例,岩骨尖4例,枕骨2例。19例有2处及以上联合侵犯病变。表现形式有:正常低信号的颅底骨皮质不完整;骨髓内T1高信号脂肪影消失,被肿瘤信号代替;骨内被侵犯病灶异常强化;穿过颅底神经孔的条索状强化影。有颅内侵犯者19例。结论:MRI检查对鼻咽癌颅底侵犯的诊断具有独特的价值。Purpose： To study MRI feature in the diagnosis of nasopharyngeal carcinoma with skull base erosion. Ma- terials and Methods： Ninety patients of NPS with skull base erosion proven histopathologically were selected. All cases had plain scan and enhancement scanning. Results： Areas of skull base involvement were as follow： 16 cases with pterygoid process, 11 with the occipital slope, 13 with foramen oval（including sphenoid wing）, 4 with petrous apex, 2 with occipital bone. 19 cases had more than one area involvement. There are four patterns in our group： ① Defect in the signal avoid cortex of skull base; ②High signal intensity of marrow was replaced by tumor; ③ Contrast enhancement in abnormal bone; ④ String like enhancement passing nerve foramen in skull base. 19 cases including intracranial abnormal. Conclusion： MRI in the diagnosis of skull base invasion nasopharyngeal carcinoma（NPC） has a unique value.

关 键 词：鼻咽癌 颅底浸润 磁共振成像 

分 类 号：R739.63[医药卫生—肿瘤]