The Diagnostic Value of MRI in Parotid Adenolymphomas

Objective To investigate the characteristics of adenolymphomas of the parotid gland.Methods The MRI characteristics of adenolymphomas in parotid gland in 27 cases proved by operating pathology.Results 42 lesions were found among 27 cases.35 of the lesions were located in the posterior and inferior quadrant of the parotid gland.16 were solitary and 7 were multiple lesions in one side while the last 4 were multiple lesions bilaterally located.On MRI,the adenolymphomas were presented as round and oval soft tissue mass with smooth border.T1W1 presented as intermediated or high signal intensity while T2W1 and FS T2W1 presented mixed signals.The lesions showed prophase mild and moderate enhancement except the cystic change area after strengthening the signal.Conclusion Plain and enhanced MRI scanning conduce to the diagnosis and differential diagnosis of adenolymphomas in the parotid gland.