A 76-year-old man with a carcinoma ex pleomorphic adenoma (case 2).

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High-signal-intensity lesions on T2-weighted MR images

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Presentation transcript:

A 76-year-old man with a carcinoma ex pleomorphic adenoma (case 2). A 76-year-old man with a carcinoma ex pleomorphic adenoma (case 2). A, Axial T2-weighted image (fast spin-echo: TR/TE, 4102/90) shows a mainly well-demarcated mass with heterogeneous intensity of the right parotid gland. The anterior component shows mild high intensity (arrowheads), and the margin of the posterior component shows low intensity (arrow). B, ADC mapping image shows the anterior component of hypercellularity with carcinoma (arrowheads) and the posterior component of hypocellularity with pleomorphic adenoma (arrow). H. Kato et al. AJNR Am J Neuroradiol 2008;29:865-867 ©2008 by American Society of Neuroradiology