Not a tributary of Azygos Vein among the following is
1. Formative tributaries of Azygos Vein are Lumbar Ascending vein, Subcostal Vein and lumbar azygos vein.
2. Right Bronchial Vein is the last tributary of Azygos Vein
Lumbar Ascending vein
Subcostal Vein
Intercostolumbar azygos vein
Right Bronchial Vein