KLK3 and posterior cortical atrophy: Significant differences were observed in testosterone levels (PCa: 4.45 ng/mL, IQR: 2.95–5.76 vs. non-PCa: 6.12 ng/mL, IQR: 5.55–6.86, p = 0.01), T/PSA ratio (PCa: 0.61, IQR: 0.45–0.78 vs. non-PCa: 0.92, IQR: 0.71–1.08, p = 0.01), prostate volume (PCa: 40 cc, IQR: 33–47 vs. non-PCa: 54.5 cc, IQR: 40–61.75, p < 0.01), and PSAD (PCa: 0.18 ng/mL/cc, IQR: 0.15–0.28 vs. non-PCa: 0.12 ng/mL/cc, IQR: 0.11–0.13, p < 0.01).