PMC4601973_01
Coronal and sagittal cuts of CT scan showing retrocaval ureter; the CT scan images show dilated right renal pelvis and ureter which passes behind the inferior vena cava.
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Ultrasonography revealed moderate right hydronephrosis, which was confirmed on computed tomography (CT) scan as a retrocaval ureter passing posterior to the inferior venae cave (IVC) (Fig. 1).
PMC4601973_02
MAG-3 renogram demonstrating no obstruction to urinary excretion; The MAG-3 renogram demonstrates good clearance of contrast with no obstruction, indicating good function of both kidneys. The differential function of the left and right kidney is 47.6% and 52.4% respectively.
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Tc-99m MAG3 renogram on subsequent follow-up showed good excretory function of the right kidney with no evidence of obstruction (Fig. 2).