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1: Yonsei Med J. 2004 Oct 31;45(5):947-51.
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Congenital absence of inferior vena cava as a rare cause of pulmonary thromboembolism.

Cho BC, Choi HJ, Kang SM, Chang J, Lee SM, Yang DG, Hong YK, Lee DH, Lee YW, Kim SK.

Department of Internal Medicine National Health Insurance Corporation Ilsan Hospital, 1232 Baeksuk-dong, Ilsan, Koyang, Gyeonggido 411-719, Korea.

Interruption of the inferior vena cava (IVC) with azygos continuation is an uncommon vascular anomaly that results from aberrant development during embryogenesis. We report a rare case of this anomaly, presenting with massive pulmonary embolism. Subsequent evaluation with abdominal CT scan revealed the congenital absence of retrohepatic IVC. The patient was successfully treated with anticoagulation. When deep venous thrombosis (DVT) develops in patients with no apparent risk factors, the presence of congenital IVC anomalies should be considered.

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PMID: 15515211 [PubMed - indexed for MEDLINE]