[The so-called "celio-mesenteric button-hole" region, an anatomico-surgical study].

Average biometric values of the abdominal aorta and its collaterals, together with their variations, were studied during 80 multiple organ biopsies and 60 cadaver dissections. Two morphotypes were detected raising technical and tactical problems during multiple organ biopsies, particularly since this region includes the origin of the renal arteries. The left transplexic approach provides enhanced safety during control of arterial ostia.