The right kidney is enlarged, however, it retains its kidney-shaped morphology. It identifies an obstructive stone at the level of the renal pelvis that reaches 2 cm in diameter. The major calyces are dilated, with the presence of hypodense content inside (16 HU). These generate the sign "paw sign". The renal cortex is thinned, the perirenal fat is striated, and Gerota's fascia is thickened. However, perirenal collections are not observed.
The left kidney also presented an obstructive stone in the ureteropelvic junction, in addition to other non-obstructive punctate stones in its major calyces.
Multiple cholelithiases and calcified granuloma in the right lower lobe as incidental findings.