PMC5181552_01
Abdominal axial CTA image in the mesoaortic region showing that the left renal vein was compressed and narrowed (black arrow). The proximal segment of the left renal vein was larger than the post-stenotic segment (arrowheads).
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In the mesoaortic region the LRV showed a beak shape (Figure 1).
Coronal and slightly left oblique (A) and sagittal (B) 3D volume rendered CTA images. The left renal vein was stuck between the abdominal aorta and the SMA after the confluence of the enlarged left ovarian vein (arrow). Note the varicosities in the pelvic veins (arrowheads). The left renal vein course through a narrowed space between the aorta and SMA was clearly seen on sagittal image (B).
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The ratio of LRV was 2.9, the left renal and ovarian veins were enlarged, and the pelvic veins were congested (Figure 2A, 2B).