Retrospective analysis of the multispiral computer tomography results was conducted in 52 children, suffering portal hypertension (PH). Three types (А, В, С) of the splenomesenterial confluence (SMC) structure were delineated. Basing on anatomical peculiarities of SMC, possibility of the mesocaval shunting (МCSH) performance in accordance to procedures of side—to—side or of a Н—like MCSH (Н—MCSH) in a SMC types А and С is nearly similar; in a SMC types В the possibility of Н— МCSH per' formance is exceeding that of MCSH in a side—to—side fashion. Decompression prop' erties and changes in portohepatic perfusion (PHP) after application of MCSH in vari' ous SMC types were analyzed. The greatest decompression and preservation of PHP in SMC types В and С were achieved after performance of MCSH in a side—to—side fash' ion. In a SMC type А the essential difference of these indices in various kinds of MCSH was not observed.