RT Journal Article SR Electronic T1 Low Back Pain as the Initial Symptom of Inferior Vena Cava Agenesis JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 593 OP 595 VO 27 IS 3 A1 Yigit, H. A1 Yagmurlu, B. A1 Yigit, N. A1 Fitoz, S. A1 Kosar, P. YR 2006 UL http://www.ajnr.org/content/27/3/593.abstract AB Summary: Inferior vena cava (IVC) agenesis is a rare anomaly that is usually an incidental finding in radiologic work-up or it can rarely be symptomatic due to deep venous thrombosis of iliac veins. In this report, we present a case of IVC agenesis detected on lumbar spinal MR imaging scans by extensive epidural-paravertebral collateral vessels compressing the thecal sac and causing low back pain in a child.