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Azygos continuation of the inferior vena cava was diagnosed by magnetic resonance (MR) imaging in a patient with a right tracheobronchial angle mass. The characteristic findings included a dilated azygos vein and absence of the hepatic segment of the inferior vena cava. Advantages of MR imaging in evaluation of anomalies of the cava are discussed.
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Schultz et al. (1984) studied this question.
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