摘要
鼻腔－鼻窦肿瘤侵犯颅底无论在诊断方面，还是在治疗方面都是棘手的问题。为了准确判定肿瘤的原发部位、大小及侵犯范围，影像学检查至关重要。１９９３年１月至１９９５年１月，收集了１２例鼻部肿瘤侵犯颅底病人的临床与影像学（ＣＴ与ＭＲＩ）资料，结果发现：①鼻腔－鼻窦肿瘤侵犯颅底的病人平均年龄偏低，本组１２例的平均年龄为３４岁；②对有鼻塞，鼻出血等鼻部症状的病人伴眼部症状时，应引起临床医师的高度重视；③从观察鼻腔。鼻窦肿瘤是否有颅底受累的角度看，以冠状位ＣＴ扫描最为适宜；④ＣＴ可以较好地显示筛骨水平板、筛骨纸样板、颅底等骨性结构，ＭＲＩ能很好地显示脑膜、脑、视神经、颈内动脉等软组织改变，并可以清楚地显示肿瘤的边界。在临床工作中，ＣＴ的费用比ＭＲＩ低廉，而且更为普遍，对怀疑有颅底侵犯的病人，应首先做ＣＴ检查，为了更好地观察颅底软组织的受累情况，以决定手术的可行性及手术方法，最好加做ＭＲＩ检查。
Abstract Between 1 993 and 1 995,12 patients with sinonasal tumor invading skmlbase under-went CT and MRI assessment.It was found that:(1) the average age of these patients was 34 years(range:5～57 years of age);(2) nasal obstruction, epistaxis,exophthalmos and hypopsia were main complaints;(3) coronal CT scan were valuable for observing skull base invasion;(4) CT provided superior bone detail, dOcumenting invasion of lamina papyracea,fovea ethmoidalis,cribriform plate and skull base. MRI demonstrated invasion of dura,brain,optical nerve,internal carotid artery and soft-tissue-tumor interface, For patients with sus-pected skull base invasion,CT should be first-line choice,In order to observe soft-tissue inva-sion,MRI should be performed.
出处
《耳鼻咽喉（头颈外科）》
1996年第4期209-213,共5页
Chinese Arch Otolaryngology-Head Neck Surg
