Diagnostic performance of 99mTc-PSMA SPECT/CT in primary prostate carcinoma

Figure 5 A 62-year-old man presented with lower urinary tract infections and incomplete voiding, S. PSA 10.2 ng/dL, and G-IV prostatomegaly on USG. A and B: ^99mTc-PSMA planar images show no tracer localization in the prostate gland region (orange arrows), and tracer uptake was noted in the urinary bladder; C and D: Axial CT and SPECT-CT fused images show prostatomegaly with no significant tracer uptake. Biopsy from the prostate was positive for malignancy (adenocarcinoma, GS-3+3).