CT对鼻咽纤维血管瘤的诊断和应用价值.doc

CT对鼻咽纤维血管瘤的诊断和应用价值
(作者:___________单位: ___________邮编: ___________)
【摘要】目的:探讨CT对鼻咽纤维血管瘤的诊断和应用价值。方法:回顾性分析14例经手术和病理证实的鼻咽纤维血管瘤的CT资料,包括肿瘤大小、密度、侵犯范围、强化情况及骨质改变等。结果:按Chandler分期,Ⅱ期3例,Ⅲ期9例,Ⅳ期2例。平扫CT值32~61HU,增强扫描强化80~130HU;翼腭窝的扩大增宽, 上颌窦后壁受压前移、塑形,周围骨质的压迫塑形或吸收破坏;5例经颅底自然孔或裂隙侵入颅内。结论:增强CT对鼻咽纤维血管瘤可作出明确诊断,并判断其侵犯范围,对临床术前评估、分期及放疗定位具重要指导作用。
【关键词】鼻咽纤维血管瘤;体层摄影术, X 线计算机;诊断
[ABSTRACT] Objective: To explore the diagnosis value of CT in the nasopharyngeal angiofibroma. Methods: Data of 14 cases ofnasopharyngeal angiof ibroma confirmed by surgery and pathological examination were retrospectively analyzed, including tumor size, density, location, contrast enhancement and sclerotin involvement. Results: According to Chandler classification, 3 out of the 14 cases were evaluated as stage
Ⅱ, 9 cases were stage Ⅲ and 2 cases were stage Ⅳ. Nasopharyngeal angiofibroma were shown as expanding lesions with dense matrix of 3261 HU in regular CT, and 80130HU in contrast enhanced CT. It was also shown that pterygopalatine fossa were expanded, posterior wall of maxillary sinus were pressed forward, surrounding sclerotin were molded or broken. Skull base invasion through intracranial holes or cracks was shown in 5 cases. Conclusion: Enhanced CT scan could be used for making definite diagnosis, preoperative stage evaluation, and chemotherapy guidance because it shows locations and erosion status of nasopharyngea