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Established extraprostatic extension. a T2W MRI with a heavily DW image of the prostate overlaid (in colour). b T2W close-up of the prostate. c Corresponding whole-mount section with a 1 mm2 grid overlay. d Close-up microscopic view. The dashed line represents the boundary of the prostate and the black arrow indicates the extraprostatic extension of 2–3 mm in radial length, which was clearly demonstrated (white arrow, b) and correctly staged at MRI
