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| The value of DWI in differential diagnosing benign and malignant nasopharyngeal lesions |
| LI Wei, LU Bin-gui, FU Wen-hai, TANG Ri-jie |
| Department of Radiology, Cancer Hospital of Guangzhou Medical University, Guangzhou 510095, China |
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Abstract Objective: Study on the DWI imaging features of nasopharyngeal mucosa to differentiate nasopharyngeal benign or malignant lesions. Methods: 112 cases with DWI of nasopharyngeal mucosa were divided into 6 groups according to the imaging features(symmetry, signal intensity of bilateral fractures, thickness of mucosa), symmetric and asymmetric group, high signal and low signal group, mucosal thickening group and non-thickening group. Grouping and qualitative results were compared and analyzed. To study the value of the features of the 3 groups to judge the nature of nasopharyngeal lesions. Results: There were significant differences between symmetric group and asymmetric group, high signal group and low signal group, thickening group and non-thickening group. The sensitivity and specificity of symmetry were 79.5%, 65.8%, signal intensity were 59%, 95.9%, the thickness of mucosa were 74.4%, 94.5%, and their Az values were 0.726, 0.774, 0.844. Conclusion: Symmetry, signal intensity and thickness of mucosa can be used as diagnostic criteria of nasopharyngeal benign or malignant lesions on the DWI image, and diagnostic value of mucosal thickness is the largest.
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Received: 14 August 2013
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2014, Vol. 25 
