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Prostate cancer in a 64-year-old man. (a) On an axial T2-weighted MR image obtained with an endorectal coil, the peripheral zone of the prostate gland appears normal (ie, has high signal intensity), but a questionable focus of hypointensity is seen in the anterior left central portion of the gland (arrow). (b) Axial ADC map more clearly depicts the questionable area as a hypointense focal region of restricted diffusion (arrow).
