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CC BY-NC-ND 4.0 · Indian J Radiol Imaging 2013; 23(01): 81-85
DOI: 10.4103/0971-3026.113621
ORIGINAL ARTICLE

Appearances of the circumcaval ureter on excretory urography and MR urography: A single-center case series

Prakash Muthusami
Department of Radiodiagnosis, Jawharlal Institute of Post Graduate Medical Education and Research, Pondicherry
,
Ananthakrishnan Ramesh
Department of Radiodiagnosis, Jawharlal Institute of Post Graduate Medical Education and Research, Pondicherry
› Author Affiliations Source of Support: Nill.
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Abstract

Objectives: To describe Magnetic Resonance Urography (MRU) appearances of the circumcaval ureter, a rare congenital cause of hydronephrosis. Materials and Methods: Seven cases of circumcaval ureter, suspected on intravenous urography (IVU), underwent subsequent static MRU using heavily T2-weighted sequences. Results: The various appearances of circumcaval ureter on IVU and MRU were studied and compared. The circumcaval portion of the ureter was especially well seen on axial MRU sections, though this portion was routinely not visualized on IVU. In one case with a ureteric calculus, MRU also depicted a circumcaval course of the ureter, thus providing a complete diagnosis. In yet another case, where a circumcaval ureter was suspected on IVU, MRU proved the actual cause of ureteric obstruction to be a crossing vessel. Conclusion: Static MRU using heavily T2-weighted coronal and axial sequences can make or exclude the diagnosis of circumcaval ureter unequivocally.

Keywords

Circumcaval ureter - hydronephrosis - intravenous urography - magnetic resonance urography


Publication History

Article published online:
04 October 2021

© 2013. Indian Radiological Association. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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