Comparison of CT and color Doppler diagnosis on parotid benign tumor by pathologic analysis

ObjectiveTo study the diagnosis value of dual-phase enhanced multi-slice spiral CT (MSCT) and color Doppler flow image (CDFI) on diagnosis of parotid pleomorphic adenoma.MethodsTwelve cases of pathologically confirmed parotid pleomorphic adenoma and 10 cases of adenolymphomas were undergone MSCD and CDFI examinations respectively.ResultsBy MSCT,pleomorphic adenoma showed delayed enhancement while adenolymphoma showed washout,their degree of enhancement were statistically different (P0.05).Blood supply in adenolymphoma was richer than that in pleomorphic adenoma by CDFI,and the difference was statistically significant (P0.05).Pleomorphic adenoma showed rich cartilage,myxoid stroma and rare vascular structure,while adenolymphoma showed rich lymphoid stroma and large number of blood vascular.The sensitivity and specificity of MSCT on diagnosing pleomorphic adenoma were 91.67% and 90.00% respectively,on adenolymphoma were 90.00% and 100% respectively.While the sensitivity and specificity of CDFI on diagnosing pleomorphic adenoma were 75.00% and 80.00% respectively,on adenolymphoma were 80.00% and 83.33% respectively.ConclusionsThe imaging features of parotid pleomorphic adenoma and adenolymphoma by MSCT and CDFI are consistent with tumors’ pathologic features.The diagnostic value of MSCT is better than that of CDFI.