The Imaging Analysis of Warthin Tumor of Parotid Gland

Objective: To investigate the findings of the CT and MRI of the warthin tumor of parotid gland,in order to improve its knowledge.Methods: The CT and MRI findings of 37 patients(32 males and 5 female,the age ranged from 27~80 years with average of 59 years) proved pathologically were retrospectively analyzed.30 cases had history of smoking(81%).Results: 56 lesions were found among 37 cases,with unilateral single tumors in 28 cases(28 lesions),unilateral multiple lesions in 4 cases(12 lesions),and bilateral multiple lesions in 5 cases(16 lesions).The maximal diameter of the lesions ranged between 0.5cm and 4.8cm.The lesions were round or oval,and well-demarcated soft tissue mass.The parenchyma of the tumors appeared as homogeneous or heterogeneous density or signal intensity.The parenchyma of the lesions demonstrated early significant enhancement on postcontrast CT,and non-uniform enhancement on postcontrast MRI scans.Conclusion: There are some characteristic clinical and CT and MRI features in the warthin tumor,its diagnostic accurate rate can be improved combined with the patient's age,gender and the long duration of clinical symptoms.