Grases, FelixCosta-Bauza, AntoniaGarcía-Raja, AnaRodrigo, Dolores2024-09-182024-09-182021-01Grases F, Costa-Bauza A, Garcia-Raja A, Rodrigo D. Rare non-papillary lithiasis of calcium oxalate monohydrate generated on a central core of potassium urate. Urol Case Rep. 2021 Jan;34:101483.http://hdl.handle.net/20.500.13003/17227https://hdl.handle.net/20.500.12105/23183This report describes a patient who developed a spheroidal calculus with a central part composed of potassium urate, surrounded by a continuous layer of calcium oxalate monohydrate with crystals of calcium oxalate dihydrate on the surface. The mechanism of calculus development is also suggested.enghttp://creativecommons.org/licenses/by-nc-nd/4.0/Potassium urateCalcium oxalate monohydrateRenal calculusresearch articleAttribution-NonCommercial-NoDerivatives 4.0 International332046453410148310.1016/j.eucr.2020.1014832214-4420Urology Case Reportsopen access2-s2.0-85095741606601386300012L2008494853