14-year-old female with a history of bilateral hip pain and limited range of motion, right greater than left. Evaluate for sacroiliitis, joint space narrowing, or erosions. PELVIS:UTERUS, ADNEXA: No significant abnormality noted.BLADDER: No significant abnormality noted.LYMPH NODES: No significant abnormality noted.BOWEL, MESENTERY: No significant abnormality noted.BONES, SOFT TISSUES: The sacroiliac joints are normal in appearance. Sclerotic changes of both femoral heads. There is high T2 signal in the femoral trochanters which may represent trochanteritis. Punctate low T1, intermediate T2 focus along the lateral aspect of the right femoral head may represent a subchondral cyst or erosion (best seen on coronal projection, series 301, image 16). There is a moderate-sized right hip joint effusion with debris present. On post-contrast images, the joint effusion demonstrates enhancement. Small focus in the right posterior acetabulum (series 901, image 22) is low signal on T1, intermediate to high on T2, and demonstrates enhancement. OTHER: No significant abnormality noted.
1. Right hip deformity with a moderate-sized joint effusion. Enhancement of the synovium is suggestive of synovitis. Enhancing focus in the right posterior acetabulum may represent an erosion. 2. No evidence of sacroiliitis as clinically questioned. 