Right iliac fossa pain.
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CT of the pelvis shows diffuse enlargement as well as heterogenous density of the right iliacus muscle as well as distal right psoas muscle, psoas tendon down to its insertion into the lesser trochanter. Intact right iliac bone no evidence of bone destruction. No enlarged lymph nodes.
55 year old male described right iliac fossa pain with CT demonstrating a heterogeneous mass in the iliopsoas muscle (mainly iliacus). The lack of internal fluid density and marginal enhancing component in the case may exclude the possibility of iliopsoas abscess, and raises the possibility of hematoma. No CT findings to support the diagnosis of primary bone lesion or bone metastasis with soft tissue component. The main differential diagnosis is Iliopsoas abscess.