[The position of the renal pelvic axis in the infant (author's transl)].

The position of the longitudinal axis of the renal pelvic system is of special significance in the diagnosis of renal pelvic reduplications, horseshoe kidneys and space occupying processes of the kidney. The present study of 143 normal infant urograms shows that the angle between the axis of the renal pelvis and the axis of the vertebra is dependent on age. While in the newborn a negative angle is a common finding, during adolescence the axis approaches the position we usually find in the adult.