Progressive Diffuse Osteonecrosis in a Patient with Secondary Hemophagocytic Lymphohistiocytosis

Figure 2

Axial T2 weighted images following a lumbosacral plexus protocol show right psoas fluid collections (a) and a fluid collection in the right iliopsoas muscle anterior to the sacroiliac joint (b). The smaller contralateral collection anterior to the left sacroiliac joint is not shown. Note diffuse muscle edema asymmetrically affecting the gluteal and iliacus musculature.

(a) Axial T2 TSE

(b) Axial T2 TSE