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The left kidney is mildly enlarged with excess renal sinus fat as well as perirenal fat associated with marked parenchymal atrophic changes and compressed pelvicalyceal system that is also contracted over a branching staghorn stone. Preserved renal outline and mild perirenal fat stranding.
Left vesicoureteric junction small stone.
Multiple right renal small simple cortical cysts and cortical irregularities.
Excess right extrapleural fat on the right side related to the right lower lobe posteriorly. It forms a mass appearance of pure fat density smoothly splays the basal segments of the right lower lobe. No evidence of a connection to intraperitoneal contents or a diaphragmatic defect.