75 year-old man on active surveillance for prostate cancer. PSA of 5.9 ng/mL.
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Finding: The left posterior TZ demonstrates a non-rounded non-encapsulated focal region of homogeneous decreased T2 signal (darker than the remainder of the TZ) also showing focal markedly decreased ADC and increased high b-value signal. The lesion measured over 15mm.
T2WI: 5. DWI: 5.
PI-RADS: 5.
MRI/TRUS fusion biopsy: Gleason score 3+4 tumor.