31. Inferior vena cava filters should be removed as soon as it becomes safe to start using anticoagulation. 32. The presence of the tumor may disrupt the normal upper airway obstruction and superior vena cava syndrome. 33. The play was adapted and directed by Dash Kruck as part of Vena Cava Production's 2013 Mainstage Season. 34. Below, it is joined to the upper left pulmonary vein by the ligament of the left vena cava . 35. The right ovary drains from the plexus to the ovarian vein and then to the inferior vena cava . 36. Other sites which have been used include the subclavian vein, carotid artery, femoral vein and inferior vena cava . 37. They can occur near the superior vena cava or inferior vena cava , but the former are more common. 38. They can occur near the superior vena cava or inferior vena cava, but the former are more common. 39. Some filaments are distributed to the spermatic plexus and, on the right side, to the inferior vena cava . 40. On the left, they drain into the renal vein which in turn drains into the inferior vena cava .
