We present the case of a healthy, young Caucasian female who presented to an outside hospital with @entity2268 cerulea dolens of both lower extremities. Computed tomography angiography revealed @entity432 . She was initiated on @entity6950 infusion and transferred to University of Virginia Medical Center. Our evaluation revealed @entity3894 of the IVC from the infrahepatic segment to the confluence of the common iliac veins and acute bilateral iliac vein @entity715 . An extensive network of collateral veins was noted. These findings were consistent with IVC agenesis. She was not pregnant or using contraception. Primary @entity49 workup was negative. She underwent bilateral iliac vein thrombolysis and was started on anticoagulation. While IVC agenesis is rare, it carries risk for development of @entity715 and bears consideration when evaluating young @entity1 with unexplained @entity1150 , especially if extensive and bilateral.

IVC agenesis: a rare cause of XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity2268 :: ('MESH:D013924', 'Disease') :: ['phlegmasia'] @entity49 :: ('MESH:D019851', 'Disease') :: ['thrombophilia'] @entity1150 :: ('MESH:D020246', 'Disease') :: ['deep vein thrombosis'] @entity6950 :: ('MESH:D006493', 'Chemical') :: ['heparin'] @entity432 :: ('MESH:D001157', 'Disease') :: ['inferior vena cava (IVC) occlusion'] @entity715 :: ('MESH:D013927', 'Disease') :: ['thromboses', 'thrombotic sequelae'] @entity3894 :: ('MESH:C563261', 'Disease') :: ['aplasia']
@entity1150 :: (MESH:D020246,Disease) :: ['deep vein thrombosis']
