Discussion of Circumcaval ureter
- A circumcaval ureter is also AKA retrocaval ureter.
- Developmental anomaly of the inferior vena cava (right supracardinal system fails to develop, whereas the right posterior cardinal vein persists), not the ureter.
- With one reported exception, the anomaly always occurs on the right side.
- Patients with this anomaly may develop partial right ureteral obstruction or recurrent urinary tract infections.
- Therapeutic options include surgical relocation of the ureter anterior to the cava.
 Imaging Findings for Circumcaval ureter
- The proximal ureter courses posterior to the IVC, then emerges to the right of the aorta, coming to lie anterior to the right iliac vessels.
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 References for Circumcaval ureter
- J. Edward Bass, Michael D. Redwine, Larry A. Kramer, Phan T. Huynh, and John H. Harris, Jr. Spectrum of Congenital Anomalies of the Inferior Vena Cava: Cross-sectional Imaging Findings. RadioGraphics 2000 20: 639-652.