missing vena cava My son has a missing inferior vena cava. He has had 3 blood clots in his legs. Due to all this he has Venous Leg Ulcers. He is 26 years old and has had problems for the last 10 years. Nobody seems to know what to do to help him other than having him on coumadin. He is in constant pain. If you have any idea, please let me know. From: Kathy@askar.com Story Categories UPDATED STORIES CATEGORIES   Feb. 16 6 Aneurysms May. 19 48 Blood Clots (Venous ... Aug. 28 12 Chronic venous insufficiency Feb. 07 11 Congenital Vascular Malformation ... Mar. 12 2 Hemangiomas Feb. 22 1 Hemorrhoids 0 Hepatic Vein Obstruction, aka ... Feb. 01 2 Incompetent Perforator Veins 0 Ischemia of the lower extremities ... Sep. 26 2 Lymphedema Mar. 23 4 Non-healing wounds Nov. 21 11 Phlebitis Jul. 20 5 Port Wine Stain Apr. 17 1 Raynaud's disease Mar. 01 8 Restless Leg Syndrome Nov. 01 2 Right Ovarian Vein Syndrome Oct. 09 15 Spider veins May. 26 76 Varicose Veins May. 13 7 Venous Leg Ulcers Nov. 08 23 Other