FIGURE 1. Stage IV non-Hodgkin’s lymphoma with splenic involvement in 77-y-old man (patient 4). (A) ¹⁸F-FDG PET image shows diffusely increased splenic uptake of ¹⁸F-FDG that is greater than hepatic uptake. S/L ratio was 1.9. (B) CT image shows multiple splenic hypodensities. Splenic index was 1,612 mL.