鼻咽部纤维血管瘤的CT和MRI诊断  

CT and MRI Diagnosis of Nasopharyngeal Angiofibroma

作　　者：曹慧芳[1] 胡姣[1] 魏娜[1] 史浩 王光斌 

机构地区：[1]武警广东省公安边防总队医院磁共振中心,广东深圳518029 [2]山东省医学影像研究所磁共振中心,山东济南250021

出　　处：《中国CT和MRI杂志》2012年第3期30-32,共3页Chinese Journal of CT and MRI

摘　　要：目的探讨鼻咽部纤维血管瘤的CT和MRI影像学特征,以提高其诊断符合率。方法回顾性分析经临床证实的19例鼻咽部纤维血管瘤的CT和MRI影像学特征,结合文献报道总结本病的影像学诊断要点。结果鼻咽纤维血管瘤CT平扫多表现为等或稍低密度,与周围分界不清,增强扫描肿瘤增强极显著,边界清楚,常伴有骨质受压和吸收;MRI平扫T1WI表现为等信号或低信号,T2WI信号增高,钆喷酸葡胺(Gd-DTPA)增强T1WI可见"椒盐征"。结论鼻咽部纤维血管瘤的CT和MRI表现具有一定的特点,综合分析其影像学表现,有助于提高本病的诊断符合率。Objiective To investigate the CT and MRI manifestations of nasopharyngeal angiofibroma（NPAF） and improve its diagnostic accuracy. Methods The CT and MRI features of nasopharyngeal angiofibroma（NPAF） proved by pathology were retrospectively analyzed. The criteria of diagnosis was summarized. Results 011CT plane scan, NPAF were isodensity or slight hypodensity and could not be differentiated from st^r- rounding tissue.On enhancement CT scan,NPAF were grossly enhanced and could be clearly differentiated from surrounding structures.Most case showed either slight or remarkable pressure and bone destruction over the base of skull.On MRI plane scan,NPAF had an hypointense or isointense signal on Tl-weighted images which becarne much brighter in T2-weighted images,The i°salt-and-pepper i±appearances were shown on T1-weighted images after injectiong of GD-DTPA. Conclusion The CT and MR1 characters of NPAF have special features so that they do some help to NPAF diagnosis.

关 键 词：鼻咽纤维血管瘤 X线 计算机断层扫描 MRI 

分 类 号：R739.63[医药卫生—肿瘤] R445.2[医药卫生—临床医学]