"L1-L5: lumbar veins"
"The inferior vena cava (IVC) (plural: inferior venae cavae) is one of the great vessels that drains venous blood from the lower limbs, pelvis and abdomen into the right atrium of the heart."
"Inferior caval abnormalities are typically the result of abnormal embryologic development involving the vitelline, posterior cardinal, subcardinal and supracardinal veins 3:"
"anterior: right common iliac artery, right gonadal vessels, third part of duodenum (D3), common bile duct, portal vein, head of pancreas, first part of duodenum (D1), epiploic foramen, liver"
"posterior: lumbar vertebrae, intervertebral discs, anterior longitudinal ligament, right psoas major, right sympathetic trunk, coeliac plexus, right lumbar arteries, right renal artery, right suprarenal arteries, right inferior phrenic artery"