A giant aortocaval fistula due to abdominal aortic aneurysm.

Although very rare, the fistula development between vena cava inferior and an abdominal aortic aneurysm is a pathology which can deteriorate the clinical status of the patient rapidly. Today, this pathology can be diagnosed very easily with non-invasive tests, and invasive tests can also be used for diagnostic purposes when needed. Especially spiral computed tomography scan with contrast is usually sufficient to diagnose this pathology. A large-diameter aortocaval fistula case, which to our knowledge never presented in the literature before, and its diagnosis and treatment will be presented in this article.