FMA definition : Tributary of superior mesenteric vein, each instance of which communicates with some
hepatic portal and iliac veins and anastomose with the superficial, superior, and
inferior epigastric veins in the region of some umbilicus.;
Tributary of superior mesenteric vein, each instance of which communicates with some
hepatic portal and iliac veins and anastomose with the superficial, superior, and
inferior epigastric veins in the region of some umbilicus.