IF Finding Renal Sinus Lipomatosis Renal Sinus LipomatosisThis end stage kidney with significant parenchymal thinning has been replaced by echogenic fat which takes up 90% of the renal volume This is due to retroperitoneal fat that has replaced the parenchymal volume via the surrounding retroperitoneal fat. (“squatters”)Ashley Davidoff MD TheCommonVein.net 05477