Morphometric characteristics of the ascending lumbar and gonadal veins in normal and in case inferior vena cava infrarenal segment obstruction
Мorphometric characteristics of the major ways of collateral circulation in case of inferior vena cava infrarenal segment obstruction are described. In case obstruction of the infrarenal segment inferior vena cava is compensated by a 3-4-fold increase in comparison with the norm of the diameter of the ascending lumbar veins and dilatation gonadal vein.