Formation of stones in the KIDNEY. Stones in the KIDNEY, usually formed in the urine-collecting area of the kidney (KIDNEY PELVIS). Their sizes vary and most contains CALCIUM OXALATE. The presence of a calculus in the pelvis of the kidney; this is most often composed of mineral salts and proteins.
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DOID:585; Kidney Calculi; Kidney Calculus; Kidney Stones; NCIT:C114667; Renal Calculi; Renal Calculus; Renal stones; Stone - kidney/ureter; calculus of kidney and ureter; http://identifiers.org/medgen/98227; http://identifiers.org/mesh/D053040; http://identifiers.org/snomedct/266556005; http://linkedlifedata.com/resource/umls/id/C0392525; kidney stone