Malignant Lymphoma in the Psoas Major Muscle

Figure 1

Plain magnetic resonance images of the abdomen on admission. (a) Plain axial T1-weighted image of the abdomen revealed a mass in the right psoas muscle. The mass exhibited higher intensity (white arrow) than the adjacent normal musculature (asterisk). (b) The mass also showed mildly higher intensity on T2-weighted imaging than the adjacent normal musculature (white arrow). (c) The mass showed markedly high intensity on diffusion-weighted imaging (white arrow). (d) Plain sagittal T2-weighted image of the abdomen revealed an oval-shaped mass with homogenous, mildly high intensity inside the right psoas major muscle (white arrow).

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