case_images: PMC11440961_01
case_images: First PET scan with maximal intensity projection (MIP) (A), sagittal PET (B), fusion (C), and CT (D). Final post treatment PET scan with MIP (H), sagittal PET (E), fusion (F), and CT (G), showing completely reduced signal of bone lesions, and almost complete peri-renal collection response.
case_images: fnume-03-1273967-g001.jpg
case_images: PMC11440961_01_fnume-03-1273967-g001.jpg
case_images: F1
case_images: A first 18F-FDG PET scan was performed for infectious etiological assessment, and it exhibited hypermetabolic diffuse bone marrow, potentially related to polycythemia, accompanied by non-lytic bone hypermetabolic lesions in the femoral and humeral diaphysis, ametabolic peri-renal fluid collections, brown fat, and pleural talcoma (Figure 1: maximal intensity projection (MIP) (A), sagittal PET (B), fusion (C), and CT (D)). PET was performed to evaluate metabolic lesions response to treatment. showed a completely reduced signal of bone lesions, suggesting a complete response (Figure 1: MIP (H), sagittal PET (E), fusion (F), and CT (G)), which was substantiated both clinically and biologically, with the concurrent disappearance of telangiectasia and the monoclonal component, and the normalization of the EPO level. Peri-renal collection had an almost complete response with only a thin strip of left perirenal non hypermetabolic effusion remaining.