Silica urolithiasis without magnesium trisilicate intake.
Two cases of silica stones, without previous oral intake of magnesium trisilicate, are reported. A 64-year-old Japanese woman had bilateral renal stones. Infrared spectrophotoscopy revealed that one of the fragments consisted of silicate and the others consisted of calcium oxalate. A 75-year-old woman had right renal stones. The composition of 1 stone was a mixture of silicate and unspecified matrices. Silicate urolithiasis may not necessarily be related to oral intake of silicate-containing antacids.
Ichiyanagi
O
O
Department of Urology, Yamagata University School of Medicine, Yamagata, Japan.
Sasagawa
I
I
Adachi
Y
Y
Suzuki
H
H
Kubota
Y
Y
Nakada
T
T
D000368:Aged; D000863:Antacids / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000737:chemistry / Q000000981:diagnostic imaging / Q000209:etiology* / Q000652:urine; D017633:Magnesium Silicates / Q000627:therapeutic use*; D008875:Middle Aged; D011859:Radiography; D012822:Silicon Dioxide / Q000009:adverse effects / Q000032:analysis* / Q000652:urine; D013055:Spectrophotometry, Infrared
D000863:Antacids; D017633:Magnesium Silicates; D012822:Silicon Dioxide; C001671:magnesium trisilicate