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• Clinical Article •
MR imaging findings and its value of imaging stage of nasopharyngeal angiofibroma
YAN Zhong-yu  LIANG Xi-hong  LI Jing  WANG Zhen-chang 

DOI:10.3969/j.issn.1674-8034.2012.05.008.


[Abstract] Objective: To evaluate MR imaging findings and the value of its imaging stage of nasopharyngeal angiofibroma.Materials and Methods: Imaging findings of seventy-four patients with nasopharyngeal angiofibroma confirmed by pathology were studied, including: location, configuration, margin, signal intensity, homogeneity of T2 weighted image, enhancement pattern, and signal voids. To record the invovled sites and structures of every case and underlines the imaging stage, the accuracy of MR imaging staging system were evaluated.Results: All 74 cases originated from the nasopharyngeal space. Other imaging features including: configuration of round and ovoal in 32 cases (43.2%), irregularity in 42 cases (56.8%), margin of smooth in 18 cases (24.3%), lobular in 56 cases (75.7%). Comparing with gray matter of brain, iso-intensity in 69 cases (93.2%), hypo-intensity in 5 cases (6.8%) on T1 weighted images, hyper-intensity in 66 cases (89.1%), iso-intensity in 8 cases (10.9%) on T2 weighted images. T2 signal is homogeneous in 8 cases (10.9%), heterogeneous in 66 cases (89.1%), and cystic area was demonstrated in two cases. Markedly heterogeneous enhancement was exhibited in 49 cases (66.2%) and homogeneous enhancement in 25 cases (33.8%) after contrast injection. Signal voids in 61 cases (82.4%) of 74 cases. The results of MR imaging stage of 74 cases is:Ⅰa stage 6 cases (6 cases), Ⅰb stage 2 cases (2 cases), Ⅱa stage 5 cases (5 cases), Ⅱb stage 20 cases (20 cases), Ⅱc stage 14 cases (18 cases), Ⅲa stage 18 cases (13 cases), Ⅲb stage 9 cases (10 cases).Conclusion: MR imaging feature is characteristic for nasopharyngeal angiofibroma. MR imaging stage system can be used as the pre-operation stage of nasopharyngeal angiofibroma in clinics.
[Keywords] Angiofibroma；Nasopharyngeal diseases；Magnetic resonance imaging；Neoplasm staging

YAN Zhong-yu Department of Medical Imaging Center, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China

LIANG Xi-hong Department of Medical Imaging Center, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China

LI Jing Department of Medical Imaging Center, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China

WANG Zhen-chang * Department of Medical Imaging Center, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China

*Correspondence to: Wang ZC, E-mail: cjr.wzhch@vip.163.com

Conflicts of interest   None.

Received  2012-06-26
Accepted  2012-08-20
DOI: 10.3969/j.issn.1674-8034.2012.05.008
DOI:10.3969/j.issn.1674-8034.2012.05.008.

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