The histological evaluation demonstrated a testicular PCa metastasis with immunohistochemistry positivity to PSA, diffuse alpha-methylacyl-coenzyme A racemase (AMACR) pan-cytocheratines (PCT), and negativity to PSMA and Sal-like protein 4 (SALL4) (Figure 3). Here, KLK3 is linked to posterior cortical atrophy.