68-year-old male with multiple myeloma and known compression fracture at L3 and posterior fixation of the L5/S1 vertebral bodies with persistent pain. Known L3 compression fracture is out of the field-of-view. There is posterior rod and screw devices affixing the L5 and S1 vertebral bodies without evidence of hardware complication. BONE MARROW: Diffuse signal abnormality on T1 sequences likely reflects red marrow replacement secondary to myeloma treatment However, no fractures or malalignment is visualized. SOFT TISSUES: Abnormal signal is visualized diffusely within the left gluteus musculature with mild fraying of the distal tendon, which may reflect partial tear. Edema also is visualized within the proximal IT band, which may represent reactive inflammatory change.JOINTS: Moderate osteoarthritis affects the bilateral hips with subchondral cysts and areas of sclerosis. The sacroiliac joints appear within normal limits.ADDITIONAL
1. Findings compatible with diffuse red marrow replacement of the marrow.2. Findings compatible with partial tear of left gluteus maximus and associated reactive inflammatory change.3. Posterior rod and screw fixation of the L5-S1 vertebral bodies without evidence of significant complication.