LiverSpleenSplenic veinSuperior mesenteric veinSuperior rectal veinInferior rectal veinsInferior vena cavaInferior mesenteric veinLeft gastric veinPortal veinRectumStomachTributaries to azygos veinSuperficial veinson abdominal wallExternal iliac veinInternal iliac veinCommon iliac veinPara-umbilical veinsthat accompany theligamentum teres