The Role of ¹⁸F-FDG PET/CT in Multiple Myeloma Staging according to IMPeTUs: Comparison of the Durie–Salmon Plus and Other Staging Systems

Figure 2

¹⁸F-FDG PET/CT imaging in a 72-year-old man with MM: (a) MIP image; (b–f) transaxial CT and fused images. In this patient, the descriptive criteria (IMPeTUs) were BM(3), F3.SP.ExtraSP(4), L2, PM, EM.N(2), where BM3 indicates that bone marrow uptake is <liver but >mediastinum, F3 indicates 4 to 10 lesions (arrows), SP indicates the spine, ExtraSP indicates outside the spine with (4) indicating reference lesion uptake >liver uptake + 10%, L2 indicates that 1 to 3 lesions were also lytic, PM indicates a bone lesion in surrounding soft tissues with bone cortical interruption, EM indicates at least one extramedullary lesion, and N indicates that the extramedullary lesion was nodal disease with (2) indicating extramedullary lesion uptake ≤mediastinum. This patient was classified as IIA according to DS Plus.