A portal triad (also known as portal area) is a distinctive arrangement in the liver, consisting of the following three structures:
The term "portal triad" can refer both to the largest branch of each of these vessels running inside the hepatoduodenal ligament, and to the smaller branches of these vessels inside the liver.
- Histology at Boston University 15203loa - "Liver, Gall Bladder, and Pancreas: liver; portal triad"
- Histology at KUMC gitract-gi36 "Portal Triad"
- Histology at University of Southern California gi/c_82
- Overview at vetmed.wsu.edu