PMC3815018_01
(a) Axial T2, (b) precontrast T1, and (c) postcontrast T1-weighted axial MR images of the lumbar spine showing markedly enlarged bilateral iliac muscles containing heterogeneous hematomas, which also show fluid-fluid level on axial T2-weighted images
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F1
Magnetic resonance imaging (MRI) of the lumbar spine demonstrated acute hematoma formation in the iliopsoas bilaterally [Figure 1a-c].