PT - JOURNAL ARTICLE AU - Kato, H. AU - Kanematsu, M. AU - Mizuta, K. AU - Ito, Y. AU - Hirose, Y. TI - Carcinoma Ex Pleomorphic Adenoma of the Parotid Gland: Radiologic-Pathologic Correlation with MR Imaging Including Diffusion-Weighted Imaging AID - 10.3174/ajnr.A0974 DP - 2008 May 01 TA - American Journal of Neuroradiology PG - 865--867 VI - 29 IP - 5 4099 - http://www.ajnr.org/content/29/5/865.short 4100 - http://www.ajnr.org/content/29/5/865.full SO - Am. J. Neuroradiol.2008 May 01; 29 AB - SUMMARY: We present 4 cases of carcinoma ex pleomorphic adenoma of the parotid gland. In 3 of the 4 cases, diffusion-weighted and apparent diffusion coefficient (ADC) mapping images clearly revealed carcinoma as a hypercellular area with low ADC values and pleomorphic adenoma as a hypocellular area with high ADC values. Diffusion-weighted images demonstrated well complex tissue components in carcinoma ex pleomorphic adenoma, which may be useful for the diagnosis of this disease.