Fig. 1
From: Pitfalls in Interpreting mp-MRI of the Prostate: A Pictorial Review with Pathologic Correlation
A 74-year-old man with PCa at the apex and bilateral basal hypointense nodular zones (moustache sign) (white arrows). a Axial T2-weighted fast spin-echo image (4564/110). b axial T2-weighted fat saturated fast spin-echo image (4941/116) and c coronal T2-weighted fast spin-echo image (5059/120) showing symmetric, bilateral, well-defined homogeneous hypointense zones at the base of the prostate gland. d Axial perfusion gradient-echo T1-weighted, e gradient-echo T1-weighted subtracted image and f colour DCE (dynamic contrast enhance) MR map displaying mild enhancement of the hypointense zones. g Axial DWI image with b value = 1000, h 3000 mm2/sec, and i ADC map showing restricted diffusion phenomena of water molecules in the hypointense basal sites detected on T2-weighted images. According to the PIRADSv2 scoring system, the score for T2, DCE and DWI is, respectively: 3, + and 4; the overall score is 4, which means highly clinically significant cancer is likely to be present. i Photomicrograph from a prostatectomy specimen shows the compression exerted by BPH on the central zone, bilaterally (black arrows)