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Objective:The aim of the study was to study the nuclear magnetic resonance image(MRI) feature for involvement of paranasal sinuses in patients with nasopharyngeal carcinoma(NPC).Methods:The MRI of 56 patients with NPC and paranasal sinuses infringed were evaluated between December 2003 and August 2004.Results:Among them,56(100%) showed breakage in the wall of paranasal sinuses,29(51.8%) had thick mucous membrane in sinuses,36(64.3%) showed tumour invasion sinuses,55(98.2%) connected with primary carcinoma with the lesion,and 14(25%) stored up fluid in sinuses.On MRI scan technique,the positive ratios of diagnoses were 66.1%,76.8%,and 98.2% respectively(P < 0.000) in the horizontal section,coronal section and sagittal section.And nearly 60% was in the T1W1 and T2W1,but 100% in strengthen scan.Conclusion:The findings of sinuses wall breakage,thick mucous membrane in sinuses,tumour invasion cavity connective mass,and same enhancement signal in MR image may indicate the paranasal sinuses involved by primary tumour.The sagittal section and enhanced MRI scans are helpful to diagnosis.
Objective: The aim of the study was to study the nuclear magnetic resonance image (MRI) feature for involvement of paranasal sinuses in patients with nasopharyngeal carcinoma (NPC). Methods: The MRI of 56 patients with NPC and paranasal sin infinged were evaluated as December (51.8%) had thick mucous membrane in sinuses, 36 (64.3%) showed tumor invasion sinuses, 55 (98.2% ) with connected with primary carcinoma with the lesion, and 14 (25%) stored up fluid in sinuses. On MRI scan technique, the positive ratios of diagnoses were 66.1%, 76.8%, and 98.2% respectively (P <0.000) section, coronal section and sagittal section. And nearly 60% was in the T1W1 and T2W1, but 100% in strengthening scan. Conlusion: The findings of sinuses wall breakage, thick mucous membrane in sinuses, tumor invasion cavity connective mass, and same enhancement signal in MR image may indicate the paranasal sinuses i nvolved by primary tumor. The sagittal section and enhanced MRI scans are helpful to diagnosis.