1 — Femoral vein; 2 — External iliac vein; 3 — Inferior epigastric vein; 4 — Superficial epigastric vein; 5 — Superficial circumflex iliac vein; 6 — Umbilical region; 7 — Para-umbilical veins; 8 — Abdominal wall; 9 — Superior epigastric vein; 10 — Internal thoracic vein; 11 — Lateral thoracic vein; 12 — Thoraco-epigastric veins; 13 — Axillary vein; 14 — Subclavian vein; 15 — Anterior wall oftrunk; 16 — Posterior wall oftrunk; 17 — Right brachiocephalic vein; 18 — Left brachiocephalic vein; 19 — Accessory hemi-azygos vein; Superior hemi-azygos vein; 20 — Superior vena cava; 21 — Azygos vein; 22 — Hemi-azygos vein; Inferior hemi-azygos vein; 23 — Diaphragm; 24 — Right ascending lumbar vein; 25 — Left ascending lumbar vein; 26 — Lumbar veins; 27 — Inferior vena cava; 28 — Common iliac vein
