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PMC5515101_02
(a) Hypointense bilateral peripheral zone lesion on T2-weighted image (2.8 cm right side, 1.2 cm on left side). (b) Hypointense lesions corresponding to T2-weighted images on apparent diffusion coefficient map. (c) Early enhancement of right peripheral zone lesion on dynamic contrast enhancement imaging. (d) Markedly hyperintense bilateral peripheral zone lesions on high b-value diffusion-weighted imaging.
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His repeat PSA was 21.76 mug/L, and PHI was 187 (Fig. 1a-d).
Biopsy with UroNav system showing 3 cores through targeted lesion.
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The MRI images were then overlaid onto real-time ultrasound images from the transrectal probe, allowing for three-dimensional reproduction of the prostate with the ultrasound and subsequent targeting and tracking of biopsy tracts (Fig. 2).
(a) Michaelis-Gutmann bodies seen in the histology specimen. (b) CD164 stain showing histocytes throughout core specimens.
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Based on these findings, the diagnosis of malakoplakia of the prostate was made (Fig. 3a, b).