Abstract
In accordance with Terminologia Anatomica, the renal artery gives rise of two branches: anterior branch and posterior branch. Anterior branch gives rise to four segmental arteries: superior, anterior-superior, anterior-inferior and inferior; posterior branch continues with posterior segmental artery. On a total of 150 renal corrosion casts was examined the artery of inferior segment. Three morphological types have been highlighted: Type I, in which the inferior segmental artery originating directly in the trunk of the renal artery (8.0% of cases); Type II, in which the inferior segmental artery arises from the anterior branch of the renal artery (87.33% of cases); Type III, in which the inferior segmental artery arises from the posterior branch of the renal artery (4.67% of cases). In 33.33% of cases the inferior segmental artery arises independently from the trunk or renal artery branches (anterior or posterior). In 66.67% of cases, the inferior segmental artery realizes a common trunk with one or two other segmental arteries (in type II). Knowledge of these aspects is important both to investigate morphological imaging and preforming partial resection of the renal parenchyma. Keywords: kidney; corrosion casts; inferior segmental artery; variations