Figure 1.
IgGk smoldering multiple myeloma (SMM) patient with negative whole-body computed tomography. Magnetic resonance imaging of the rachis and pelvis shows two focal bone lesions with increased signal intensity in T2-weighted STIR (short-tau inversion recovery) images. One small lesion (diameter: 5 mm) of the right iliac crest (A) and one bigger lesion (diameter: 14 mm) of the right acetabulum anterior column (B), with corresponding enhancement after Gadolinium injection in T1-weighted images with fat saturation (C,D). No further focal lesion of the rachis was detected in whole-rachis sagittal T1-weighted and T2-weighted STIR sequences (E,F). These two focal bone lesions are considered a myeloma-defining event leading to the recommendation to treat this patient.