Absence of the infra-renal segment of the inferior vena cava
Cardiovascular
Case TypeAnatomy and Functional Imaging
AuthorsC. Oliveira, S. Vinhais, T. M. Cunha
Patient59 years, female
Many different anomalies are described, usually as incidental and infrequent findings: left-sided IVC, double IVC, azygos continuation of the IVC, circunaortic left renal vein, retroaortic left renal vein, circuncaval ureter, absence of the entire IVC and finally, absence of the infra-renal segment of the IVC when there is selective injury to the supracardinal system. Recognition of these anatomical variants can avoid significant morbidity during abdominal surgical procedures, liver or renal transplantation, placement of caval filters and varicocele scleroterapy. Agenesis of the infra-renal segment of the IVC is a rare anomaly (15 cases described by imagiology in the english language literature between 1957 and 1999). Of these, only two reports described persistence of the suprarenal segment, such as in this case.
Absence of the IVC was found to be associated with 5% of cases of deep venous thrombosis in patients below 30 years of age, thus representing a rare risk factor for idiopathic deep venous thrombosis.
In this particular case, CT was sufficient for diagnosis. Angiography, which remains the most accurate diagnostic technique, may provide further characterisation of these malformations.
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[2] Bass JE, Redwine MD, Kramer LA, Harris JH Jr. Absence of the inferior vena cava with preservation of the suprarenal segment as revealed by CT and MR venography. AJR Am J Roentgenol 1999 Jun;172(6):1610-12. (PMID: 10350299)
[3] Pirenne J, Benedetti E, Kashtan CE, Lledo-Garcia E, Hakim N, Schroeder CH, Cook M, Sutherland DE, Matas AJ, Najarian JS. Kidney transplantation in the absence of the infrarenal vena cava. Transplantation 1995 Jun 27;59(12):1739-42. (PMID: 7604445)
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URL: | https://www.eurorad.org/case/1462 |
DOI: | 10.1594/EURORAD/CASE.1462 |
ISSN: | 1563-4086 |