title: Silicate calculi, a rare cause of kidney stones in children.
abstract: Urinary silicate calculi in humans are extremely rare. Reported cases of silicate calculi are mostly documented in adults and are commonly related to an excessive intake of magnesium trisilicate in food or drugs. Published studies on the presence of silicate calculi in children are scarce.
  
  
  
  Three cases of silicate kidney stones without prior silicate intake are reported. Two patients underwent surgical treatment, and the third patient was treated using conservative methods. Urinalysis revealed no underlying metabolic abnormalities. Analyses revealed that silicate was the major component of the stones.
  
  
  
  Siliceous deposits in urinary stones may be more common than anticipated, and the underlying pathophysiology remains to be clarified.
authors.affiliation: Department of Pediatric Nephrology, Koç University Hospital, Davutpaşa cd no: 4 34010, Topkapı, Istanbul, Turkey. mtasdemir@kuh.ku.edu.tr.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Taşdemir
authors.affiliation: Department of Pediatrics, Ministry of Health Bağcılar Education and Research Hospital, Bağcılar, Istanbul, Turkey.
authors.forename: Dilara
authors.initials: D
authors.lastname: Fuçucuoğlu
authors.affiliation: Department of Urology, Istanbul University Cerrahpaşa School of Medicine, Kocamustafapaşa, Istanbul, Turkey.
authors.forename: Oktay
authors.initials: O
authors.lastname: Özman
authors.affiliation: Department of Pediatric Nephrology, Istanbul University Cerrahpaşa School of Medicine, Kocamustafapaşa, Istanbul, Turkey.
authors.forename: Lale
authors.initials: L
authors.lastname: Sever
authors.affiliation: Department of Urology, Istanbul University Cerrahpaşa School of Medicine, Kocamustafapaşa, Istanbul, Turkey.
authors.forename: Bülent
authors.initials: B
authors.lastname: Önal
authors.affiliation: Department of Pediatric Nephrology, Koç University Hospital, Davutpaşa cd no: 4 34010, Topkapı, Istanbul, Turkey.
authors.forename: Ilmay
authors.initials: I
authors.lastname: Bilge
mesh_terms: D002675:Child, Preschool; D006801:Humans; D007669:Kidney Calculi / Q000737:chemistry / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D008297:Male; D000074642:Nephrolithotomy, Percutaneous; D011859:Radiography; D017640:Silicates / Q000032:analysis; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
chemical_list: D017640:Silicates
keywords: Childhood; Kidney stone; Magnesium trisilicate; Silica dioxide; Silicate; Urolithiasis