[Stereotopometry of the caliceal-pelvic complex of the kidney applicable to organ-sparing operations].

By means of injection into the hollow system of the semiharden plastic "Protacryl" and tomometry, 157 human kidneys have been studied at the age of 20-90 years (117 man and 40 women). Size, form, number, and character of position of the calyces renales minores (CRM) have been determined. Basing on the diameter of the fornix, three groups are distinguished: large (15-25 mm), middle (6-14 mm) and small (2-5 mm) CRM, and according to the length of the infundibulum-long (15-25 mm), middle (8-14 mm) and short (up to 7 mm). Total amount of the CRM is from 3 up to 20. The geometrical model of arrangement in the space (3-2-3) is obtained correspondingly to superior, middle and inferior parts of the kidney and probability of revealing is determined. The CRM topography in the threedimentional space is described and indices of the calyx-pelvic system length are calculated for the whole and for each CRM separately. The data obtained are recommended to take into account in urological practice, when certain organ-preserving operations are performed.