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目的:探讨X线计算机成像(CT)、磁共振成像(MRI)及数字减影血管成像(DSA)对鼻咽血管纤维瘤的诊断价值。方法:选择经术后病理证实的鼻咽血管纤维瘤36例,分析CT、MRI及DSA的影像学表现及诊断符合率。结果:鼻咽血管纤维瘤的典型CT和MRI表现为鼻咽部软组织肿块,大部分边界清楚,密度或信号均匀,翼腭窝的扩大增宽,上颌窦后壁受压前移、塑形,但后壁骨质无破坏是其特征性表现,周围骨质的压迫塑形或吸收破坏,增强呈明显强化;CT、MRI诊断符合率分别达到94.4%和88.9%,DSA检查则可以了解病变的血供来源并可行术前超选择动脉内栓塞。结论:三种检查方法相结合,可对本病术前的定性、范围及与周围组织结构的关系等作出明确判断。
Objective: To investigate the diagnostic value of X-ray computed tomography (CT), magnetic resonance imaging (MRI) and digital subtraction angiography (DSA) in nasopharyngeal angiofibroma. Methods: Thirty-six cases of nasopharyngeal angiofibroma confirmed by postoperative pathology were selected. The imaging findings and diagnostic coincidence rates of CT, MRI and DSA were analyzed. Results: The typical CT and MRI findings of nasopharyngeal angiofibroma were nasopharyngeal soft tissue mass. Most of them had a clear boundary, a uniform density or signal, widening of the pterygopalatine fossa, widening of the posterior wall of maxillary sinus, However, the posterior parietal bone without damage is its characteristic performance, the surrounding bone compression shaping or absorption damage, enhancement was significantly enhanced; CT, MRI diagnostic coincidence rates were 94.4% and 88.9%, DSA can understand the lesion Source of blood and feasible preoperative superselective arterial embolization. Conclusion: The combination of the three examinations can make a clear judgment on the nature, extent and the relationship with the surrounding tissue before the operation.