tributary of tributary of Homo sapiens internal thoracic vein epigastric vein superior epigastric vein A vein that drains into the internal thoracic vein, anastomosing with the inferior epigastric vein at the level of the umbilicus and drains the anterior part of the abdominal wall and some of the diaphragm. Along its course, it is accompanied by a similarly named artery, the superior epigastric artery. Wikipedia:Superior_epigastric_vein venae epigastricae superiores FMA:4731 UBERON:0007155 EMAPA:18761 SCTID:286596001