<prompt> Obstruction of Inferior vena cava presents -Paraumbilical dilatationThoracoepigastric dilatationOesophageal varicesHaemorrhoids  <response>: Obstruction of inferior vena cava presents as thoracoepigastric dilatation because the vessels involved are the superficial veins, namely, superficial epigastric, lateral thoracic, thoracoepigastric. 