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《Chinese Computed Medical Imaging》 2009-03
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CT and MRI Diagnosis of Warthin Tumor in Parotid Gland

ZHU Yu,MENG Ling-ping,ZHOU Yong-ming,WEI Tao,HAN Min,LU Tong 1 Department of Radiology,Branch of Shanghai No 1 Hospital 2 Department of Radiology,Shanghai No 5 Hospital  
Purpose:To investigate the characteristics of the CT and MRI features of the warthin tumor in parotid gland.Methods:The CT and MRI features of 17 patients with operation and pathology confirmed warthin tumors were analyzed retrospectively.All patients were scanned by CT(8 patients) or MRI(9 patients).The number,size,shape,density and signal of warthin tumors were analyzed and compared with pathology.Results:Seventeen cases included 16 men and 1 woman.Their age ranged from 47 to 76 years old with mean age of 66 years.Fifteen cases of tumors were found in unilateral side and bilateral sides in 2.Twenty - four lesions were found in 17 cases(16 side) with CT and MRI,one lesion was misdiagnosed as lymph nodule by CT scan.The average maximal cross - sectional diameter of the tumors was 2.7 cm(range,0.5~5.6 cm).On CT and MRI,lesions were round or oval or irregular,well-defined, homogeneous or heterogeneous soft tissue mass.Twenty - one lesions showed non - enhance areas which were mucus degeneration or necrosis proved by pathology exam on post enhanced CT and MRI images.On post - contrast CT,the CT value of 12 lesions was increased 35Hu in average.Ten lesions were inhomogeneous enhanced on contrast- enhanced MR.Conclusion:CT and MR findings of the warthin tumor include multiplicity,intermediate inhomogeneous enhancement,and predominantly cystic -solid mixed soft tissue mass.Combined the clinical materials including age and gender with imaging manifestations of the lesion will improve the diagnosis.
【CateGory Index】: R739.8
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