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An aortocaval fistula diagnosed with 1.5-T magnetic resonance angiography
F Walter1, A Blum, I Quirin-Cosmidis
1Service d'Imagerie Guilloz, CHU-Hôpital Central, Nancy, France.
Abstract:
We report a case of aortocaval fistula demonstrated with gadolinium-enhanced magnetic resonance (MR) angiography. Specific radiographic features of this rare complication, such as early and intense enhancement of the inferior vena cava, are underlined with MR imaging. The exact location of the fistula can also be assessed with this noninvasive imaging technique. Moreover, the absence of iodinated contrast media makes it particularly suited for stable patients with renal insufficiency. A complete preoperative assessment of abdominal aortic aneurysm can be performed with MR imaging.
Insights
Gadolinium-enhanced magnetic resonance (MR) angiography effectively visualizes aortocaval fistulas, a rare complication. This noninvasive technique aids in precise localization and preoperative assessment, especially for patients with renal insufficiency.
Area of Science:
- Vascular Surgery
- Diagnostic Imaging
- Radiology
Background:
- Aortocaval fistula is a rare but serious complication.
- Accurate diagnosis and localization are crucial for surgical planning.
- Magnetic resonance (MR) angiography offers a noninvasive imaging modality.
Observation:
- Gadolinium-enhanced MR angiography demonstrated aortocaval fistula.
- Specific findings included early and intense enhancement of the inferior vena cava.
- The exact fistula location was precisely assessed.
Findings:
- MR angiography is valuable for diagnosing aortocaval fistulas.
- The technique allows for precise anatomical assessment.
- It is suitable for patients with renal insufficiency due to the absence of iodinated contrast.
Implications:
- MR angiography facilitates comprehensive preoperative assessment of abdominal aortic aneurysms and associated fistulas.
- This imaging modality can improve patient selection and surgical outcomes.
- It highlights the utility of MR angiography in complex vascular cases.