title: Matrix stones.
abstract: A scanning electron microscopic examination of matrix stones, which have been obtained from a 27-month-old Japanese boy with congenital hydronephrosis, revealed a rough fibrous net structure with small depositions of calcium phosphate. We believe that fibrous matrix may be the primary constituent and that the matrix stone may be the consequence of calcium deposition to it.
mesh_terms: D002130:Calcium Phosphates / Q000032:analysis; D002675:Child, Preschool; D006801:Humans; D007669:Kidney Calculi / Q000473:pathology*; D008297:Male; D008855:Microscopy, Electron, Scanning
chemical_list: D002130:Calcium Phosphates