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目的：探讨鼻咽癌侵犯海绵窦的ＣＴ特点。材料与方法：搜集经病理确诊为鼻咽癌并伴有海绵窦占位３６例，行鼻咽及海绵窦ＣＴ检查。３４例轴位扫描，层厚及层间距均为５ｍｍ；２例冠扫，层厚和层间距均为３ｍｍ。其中１２例行增强扫描。结果：（１）鼻咽癌原发病灶３６例；（２）海绵窦不对称３６例。患侧呈局限性、弧状或弥漫性增宽，增宽幅度为０．６～２ｃｍ，平均１．２ｃｍ；（３）颅底骨质破坏３１例，其中以破裂孔和卵圆孔的破坏或吸收扩大为最常见，分别为３０例和２３例。５例骨质未见明确改变。结论：ＣＴ可明确显示鼻咽癌侵犯海绵窦的部位、途径及范围，有助于临床分期及预后的判断，是一种优良的检查方法。
Objective: To investigate the CT features of nasopharyngeal carcinoma invading the cavernous sinus. Materials and Methods: Collect pathologically confirmed nasopharyngeal carcinoma with cavernous sinus space occupying 36 cases, the nasopharynx and cavernous sinus CT examination. 34 cases of axial scanning, layer thickness and layer spacing are 5mm; 2 cases of crown sweep, layer thickness and layer spacing are 3mm. Twelve of them underwent enhanced scan. Results: (1) 36 cases of primary nasopharyngeal carcinoma; (2) 36 cases of asymmetric cavernous sinus. Ipsilateral was limited, arc-shaped or diffuse widened, widening range of 0.6 ~ 2cm, an average of 1.2cm; (3) 31 cases of skull base bone destruction, including ruptured holes and foramen ova or destruction Absorption expanded to the most common, respectively, 30 cases and 23 cases. 5 cases of bone no clear change. Conclusion: CT can clearly show the site, path and scope of nasopharyngeal carcinoma invading the cavernous sinus, which is helpful for judging the clinical staging and prognosis. It is an excellent examination method.