Fig. 4
From: Surgical treatment of rectal cancer with a Retzius shunt: a case report
Surgical view. a Engorged vessels in the mesentery. b, c Retzius vein (arrowhead) crossing the abdominal aorta (Ao) and IMA (arrow) to the IVC. d Retzius veins (arrowhead) and the IMA (arrow) are ligated with vascular clips