case_images: PMC3779395_01
case_images: Three-year 3-month-old girl child with CACP syndrome. Anteroposterior radiograph of pelvis shows smooth flattening of femoral heads with irregular acetabulae (arrows). Bilateral femoral necks appeared short and broad with coxa vara (double arrows).
case_images: JCIS-3-24-g002.jpg
case_images: PMC3779395_01_JCIS-3-24-g002.jpg
case_images: F1
case_images: Anteroposterior (AP) radiograph of pelvis revealed a broad short femoral neck and coxa vara [Figure 1].
case_images: Three-year 3-month-old girl child with CACP syndrome. Plain AP radiograph of both knees shows periarticular osteopenia, apparent widening of the joint space the result of effusions (arrow) and enlargement of the epiphyses secondary to the hyperaemia (double arrows). Note the absence of joint erosions.
case_images: JCIS-3-24-g003.jpg
case_images: PMC3779395_01_JCIS-3-24-g003.jpg
case_images: F2
case_images: X-ray of the knee revealed bilateral effusions with osteopenia and no erosions [Figure 2].
case_images: (a) Three-year 3-month-old girl child with CACP syndrome. Coronal STIR image of hips (on 3T system) shows large bilateral joint effusions. Note the intra-osseous acetabular herniations communicating with the effusions (arrows) and (b) 3-year 3-month-old girl child with CACP syndrome. Coronal T1-weighted image of hips (on 3T system) obtained after administration of gadolinium shows rim enhancement of joint capsule (better appreciated on the left side) and of walls of intraosseous herniations (arrows). Note the lack of thick solid synovial enhancement as seen in Juvenile idiopathic arthritis.
case_images: JCIS-3-24-g004.jpg
case_images: PMC3779395_01_JCIS-3-24-g004.jpg
case_images: F3
case_images: MRI of the hip showed a large joint effusion and intraosseous fluid-filled herniations affecting the acetabulum with intra-articular connection [Figure 3a]. The synovium was mildly thickened and showed enhancement, better appreciated on the left side [Figure 3b].
case_images: (a) Three-year 3-month-old girl child with CACP syndrome. Coronal STIR image of both knees (on 3T system) shows large effusions. Small intraosseous cysts are identified along the medial femoral condyle (arrows) and (b) 3 year 3 month old girl child with CACP syndrome. Coronal T1 weighted of both knees (on 3T system) shows effusion with mildly thickened synovium (arrows).
case_images: JCIS-3-24-g005.jpg
case_images: PMC3779395_01_JCIS-3-24-g005.jpg
case_images: F4
case_images: Knee MRI showed large amount of joint fluid [Figure 4a] with mildly thickened enhancing synovium [Figure 4b].