triple phosphate calculus

triple phosphate calculus

Struvite stone, triple stone A kidney stone composed of ammonium magnesium phosphate, formed in the renal pelvis-giving rise to a staghorn calculus, and urinary bladder; TPCs are caused by urea-splitting bacteria–eg, Proteus, Pseudomonas, Klebsiella and Staphylocccus spp; TPCs appear as coffin-lid crystals in alkaline urine