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目的:研究鼻咽癌(NPC)颅底骨质破坏和颅内侵犯的CT征象及侵犯途径。方法和材料:应用全身CT机对64例经病理证实为NPC且伴有颅底骨质破坏或颅内侵犯的患者进行轴位成像。结果和结论:CT轴位扫描可以显示几乎所有颅底骨质结构的改变和颅内侵犯。颅底骨质结构改变主要有三种表现:吸收破坏、增生硬化或两者共存。破坏部位以枕骨斜坡、蝶骨体部和岩尖最多见,分别占20.1％、17.9％和16.7％。侵犯途径可分为前、前上、上、外上和后上五种,以上和后上最多见。作者认为颅底骨质破坏及颅内侵犯对临床分期,放疗方案及预后有重要意义,同时强调颅内侵犯时采用冠状位增强扫描。
Objective: To study the CT features and invasion of nasal pharyngeal carcinoma (NPC) on the skull basement and intracranial invasion. Methods and Materials: Axial imaging was performed in 64 patients with pathologically confirmed NPC associated with skull base bone destruction or intracranial invasion. RESULTS AND CONCLUSION: CT axial scanning can show almost all changes in skull structure and intracranial invasion. Skull base changes in the structure of the bone there are three main manifestations: absorption damage, hyperplastic sclerosis or both. Occipital destruction of the occipital slope, sphenoid body and rock tip most common, accounting for 20.1%, 17.9% and 16.7%. Infringement can be divided into before, before, after, outside and after on the five, above and after the most common. The authors believe that the skull base bone destruction and intracranial invasion of clinical staging, radiotherapy programs and prognosis of great significance, while emphasizing intracranial invasion using coronal enhanced scan.