13-year-old male with pain, muscle wasting, evaluate for progression of lesions Foci of T2 signal abnormality affecting bilateral iliac crests are less intense than on the prior exam. Extension into the adjacent gluteus musculature is no longer noted. Additional foci T2 signal abnormality adjacent to the left and right SI joints, and ischia are also decreased compared with the prior exam. There is mild associated enhancement of these lesions. No new foci of signal abnormality are identified. Both hip joints appear normal for the patient's age. The soft tissues and musculature are normal.
Interval improvement in multifocal marrow signal abnormality as described above. No new lesions.