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Very large left periaortic nodal conglomerate measuring 7 x 6 cm, encasing and perhaps narrowing the left renal artery, likely resulting in some narrowing of the left renal vein as well. Other smaller periureteric nodes are present bilaterally. There is abnormal soft tissue extending inferiorly between the aorta and inferior vena cava. 5 x 3 cm subxiphoid abdominal wall collection containing primarily fluid with some areas of soft tissue thickening posteriorly.