B-cell lymphoma The exam is markedly limited by motion artifact and the patient's body habitus.There is a diffusely heterogeneous appearance of the marrow signal of the pelvis and proximal femora likely the result of leukemia and posttreatment effects. There is diffuse subcutaneous edema, muscle edema, and muscle atrophy of the pelvis.As described on the corresponding MRI of the lumbar spine, there is fullness of the epidural space which is best appreciated at the level of L5-S1 on this exam (series 8 images 38 and 39 of 44 and series 9 image 41 of 44) although this is unclear. There is no evidence of an enhancing soft tissue mass within the pelvis.
1. Severely limited examination.2. The epidural fullness described on corresponding lumbar MRI is not well seen although there may be some mass effect at the level L5-S1.3. Abnormal marrow appearance of the pelvis likely reflects a combination of leukemia and posttreatment change.