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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:搜集病理确诊的鼻咽癌伴有前组颅神经损害为主要临床症状的CT资料25例。使用GE Lightspeed GX/i双层螺旋CT;18例进行CT增强扫描。结果:(1)两侧海绵窦不对称侵犯,左12例,右9例,双侧4例;(2)受累海绵窦呈局限或弥漫性增厚17例;(3)颈内动脉受累8例,颅神经受累21例,视神经受累3例;(4)海绵窦异常强化17例,脑膜异常强化3例;(5)骨质破坏:蝶窦7例,筛窦3例,颅底17例。结论:CT可精确显示鼻咽癌侵犯海绵窦的部位、途径、范围和程度,是优良的诊断方法。
Objective: To investigate the CT features of nasopharyngeal carcinoma invading the cavernous sinus. Materials and Methods: Twenty-five cases of pathologically diagnosed nasopharyngeal carcinoma with CT data of cranial nerve damage in the former group as the main clinical symptoms were collected. GE Lightspeed GX / i double-slice spiral CT was used and 18 cases of CT enhanced scan. Results: (1) asymmetric cavernous sinus invasion on both sides, left 12 cases, right 9 cases, bilateral 4 cases; (2) involving the cavernous sinus was limited or diffuse thickening in 17 cases; (3) internal carotid artery involvement 8 21 cases of cranial nerve involvement and 3 cases of optic nerve involvement; (4) 17 cases of abnormal cavernous sinus and 3 cases of abnormal meningeal membrane; (5) Destruction of bone: 7 cases of sphenoid sinus, 3 cases of ethmoid sinus, 17 cases of skull base . Conclusion: CT can accurately show the location, pathways, extent and extent of nasopharyngeal carcinoma invading the cavernous sinus and is an excellent diagnostic method.