Anatomy In case of IVC obstruction, the collateral which opens up are all except A Superior epigastric & inferior epigastric vein B Azygos& ascending lumbar vein C Superficial epigastric & ileolumbar vein D Lateral thoracic veins & preveebral vein 💡 Explanation In case of IVC obstruction, the collateral which opens up are all except ✓ Correct Answer: C. Superficial epigastric & ileolumbar vein