小野, 広幸 Tokushima University
Inagaki, Taizo Tokushima University
Minato, Masanori Tokushima University
吉本, 咲耶 Tokushima University
Obata, Fumiaki Tokushima University
西村, 賢二 Tokushima University
岸, 史 Tokushima University
serum creatinine level
For the first time, a 15-year-old boy was found to have a slight degree of proteinuria and microscopic hematuria during annual school urinalysis screening. His kidney function had already severely deteriorated. A kidney biopsy revealed tubulointerstitial nephritis (TIN) with diffuse inflammatory cell infiltration. His medical records showed his serum creatinine level to be 0.98 mg/dL two years ago, which was abnormally high considering his age. Although the etiology of slowly progressive TIN was unclear, glucocorticoid and immunosuppressant therapy improved his kidney function. This case report suggests that all doctors should recognize the reference range for the serum creatinine level in teenagers.
The Japanese Society of Internal Medicine
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