[The ilio-caval confluence syndrome].

Unlabelled: The venous confluence syndrome is the clinical consequence of the flows obstruction which are the main tributary of the deep venous system. The cava confluence syndrome is different from the aortic obstruction at the level of its bifurcation. Its causes are congenital abnormality, extrinsic, intrinsic and intramural compression.

Clinical picture: collaterization of the int. vertebral plexus of the Azigos and hemiozygos veins as well as episgastric and thoracic veins, in chronic cases. On the other hand, in acute cases, significant renal insufficiency, ascites and bilateral phlegmasia caerulea make up the clinical picture. In acute stage, surgery requires thrombectomy and endovascular prothesis whereas in chronic stage, surgery will tend to remove the cause with only a palliative action on external symptoms. In both cases, abnormalities bring about a surgical issue.