Abstract: Objective: To evaluate the value of CT texture analysis to differentiate parotid pleomorphic adenoma from adenolymphoma on enhanced computed tomography (CT) images. Methods: 32 patients with parotid pleomorphic adenoma and 28 patients with adenolymphoma were retrospective analysed. All of these cases were proved by operative pathology and underwent CT enhancement examination. Texture analysis of CT enhancement on arterial phase was performed to obtain mean, StDev, entropy, skewness, kurtosis and inhomogenity parameters. Results: In the texture snalysis, significant difference in the mean and heterogeneity between parotid pleomorphic adenoma and adenolymphoma was found. In addition, when using multiple parameters to distinguish parotid pleomorphic adenoma from adenolymphoma, the statistical difference was more significant. Conclusion: It is of significant value to combine mean and inhomogenity of texture analysis in differentiating diagnosis between parotid pleomorphic adenoma and adenolymphoma.

Key words: Parotid, Pleomorphic adenoma, Adenolymphoma, Tomography, X-raycomputed, Texture analysis