has part has part characteristic of has modifier Renal malrotation The final kidney position in the renal fossa results from the rotation of the kidney with an orientation of the renal pelvis to the medial and the renal calyces to the lateral. Malrotation of the kidney can lead to orientation of the renal pelvis anteriorly, posteriorly and laterally. In most cases, renal malrotation does not cause any symptoms, but, hydronephrosis or stone formation can be observed as complications of renal malformation. Abnormal renal morphology abnormal rotated kidney