The results of US study concerning parathyroid glands performed in 75 uremic patients on regular haemodialysis, examined by echography, are reported. The purpose of this research is the identification of the glands and the analysis of their sonographic features. The results show that parathyroids mostly have round shape and regular outlines, usually hypoechoic structure. The authors stress the use of US as a useful tool for visualization and anatomical definition of parathyroids, providing important information for surgical planning.