Asymmetric renograms in the course of acute renal failure following differences in initial renal damage and/or recovery. A study by sequential renography in three selected cases.

The recovery of kidney function during the course of acute renal failure was studied by sequential renography in three surviving patients. The restitution of renal function, although finally complete on both sides, initially occurred earlier on one side than on the other. Two cases had duplicity of the renal pelvis on one side; recovery of renal function occurred later on the side of this abnormality.