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Severe tortuosity and aneurysmal dilatation of the abdominal aorta at the origin of renal arteries, which extends to the bifurcation of aorta associated with extensive mural thrombosis. Severe erosion and scalloping of anterior part of L3 and L4 vertebrae and loss of outline of the right psoas muscle. Contrast material completely fills the renal and common iliac arteries. There is no evidence of mesenteric ischaemia, free fluid in the peritoneal cavity or contrast material in the surrounding haematoma.