Female, 4 years old. Sickle cell disease with osteomyelitis of the sacrum, 6 week therapy repeat scan. Edema and enhancement of the right sacral ala and right aspect of the sacral promontory are again seen, compatible with osteomyelitis, appearing slightly decreased in this area from the prior study. The right lateral sacrum and vertebral body at the S2 level are homogeneously involved, with decreased involvement on the left at S2. Additional involvement of the bilateral lateral aspects of the sacrum at the S3 level appears similar to prior. Persistent enhancement of the right sacroiliac joint.Edema and enhancement of the medial aspect of the right iliac bone adjacent to the sacroiliac joint.Small volume free pelvic fluid. No discrete fluid collection within the pelvis or soft tissues
Sacral osteomyelitis with decreased involvement on the left at the S2 level, but otherwise grossly unchanged sacral involvement. New involvement of a small area of the right iliac bone adjacent to the SI joint. Persistent right sacroiliitis.