Control of the left hepatic vein or of the common trunk left hepatic vein-middle hepatic vein during a hepatic resection is presumed difficult. This control is facilitated by the knowledge of the Arantius' ligament anatomy. The combined manoeuvre which associates lowering the top of segment I and section-traction of the Arantius' ligament allows exposure of the inferior aspect of the left or middle hepatic veins and allows safe dissection of these veins.