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《Radiologic Practice》 2007-07
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Differential Diagnosis of Benign and Malignant Parotid Tumors on CT

DAI Hui,QI Jian-pin,WANG Cheng-yuan,et al.Department of Radiology,Tongji Hospital,Tongji Medical College,Huazhong University of Science and Technology,Wuhan 430030,P.R.China  
Objective:To discuss the value of CT in the differential diagnosis of benign and malignant parotid tumors.Methods:The CT features of 20 cases with parotid tumors proved by surgery and pathology were analyzed retrospectively,including benign tumor (20 cases) and malignant tumor (4 cases).Results:The diagnostic accuracy of CT before surgery was 90%.For benign tumors,the main CT feature was well-circumscribed mass (15 cases,94%),the average size of the was 8cm3;the location in superficial lobe were 10 cases (63%),1 case (6%) in deep lobe and 5 cases involved both lobes simultaneously.2 cases (13%) showed intra-tumoral calcifications,3 cases (19%) with cystic degeneration,2 cases (13%) with head and neck lymphadenopathy.For malignant tumors,the average size was 13cm3.There were 1 cases (25%) with well-defined margin;1 cases (25%) located at superficial lobe,2 case (50%) at deep lobe,1 cases involved both lobes simultaneously.3 cases (75%) showed head and neck enlarged lymphadenopathy.Conclusion:CT findings provided useful information for the diagnosis and differential diagnosis of benign and malignant parotid tumors.
【CateGory Index】: R739.8
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