Rare non-papillary lithiasis of calcium oxalate monohydrate generated on a central core of potassium urate

Urol Case Rep. 2020 Nov 5;34:101483. doi: 10.1016/j.eucr.2020.101483. eCollection 2021 Jan.


This 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.

Keywords: Calcium oxalate monohydrate; Potassium urate; Renal calculus.

Publication types

  • Case Reports