鼻咽癌脑神经受累的MR影像分析

MR image analysis of cranial nerve involvement in nasopharyngeal carcinoma

目的:探讨鼻咽癌MR脑神经受累的常见部位和诊断标准。方法:回顾性分析23例有脑神经症状的初治鼻咽癌脑神经受累的MR表现和部位。结果:20例海绵窦受累(双侧受累13例),Meckel腔受累8例(双侧受累1例),14例圆孔扩大,20例卵圆孔扩大,10例翼腭窝脂肪间隙消失,12例翼内肌和翼外肌之间脂肪间歇受累,6例眶上裂增宽,11例眶下裂增宽,8例舌下神经孔肿块占位,1例颈静脉孔肿块占位。结论:MR可显示鼻咽癌脑神经受累,有助于准确分期、精确勾画靶区。

OBJECTIVE：To evaluate MR of nasopharyngeal carcinoma common site of cranial nerve involvement and diagnostic criteria.METHODS：Retrospective analysis the MR performance and position of cranial nerve involvement in 23 cases with cranial nerve symptoms who were first diagnosed as nasopharyngeal carcinoma was performed.RESULTS：Totally 20 patients with cavernous sinus invasion（13 cases with bilateral invasion）,Meckel cavity invasion in 8 cases（1 case with bilateral invasion）,foramen rotundum expansion in 14 cases and foramen ovale expansion in 20 cases,10 cases of disappearance of fat space pterygopalatine fossa,12 cases of involvement of fat space between musculi pterygoideus internus and musculi pterygoideus,6 cases of fissurae orbitalis superior widened,11 cases of fissurae orbitalis inferior widened,8 cases of mass occupying the hypoglossal nerve,one case of jugular foramen mass occupying.CONCLUSION：MR can show nasopharyngeal cranial nerve involvement,and help us accurate staging and precise outline target.