ArticleClinical and experimental nephrology2022
Ultrasonographic reference values and a simple yet practical formula for estimating average kidney length in Japanese children.
Article in Clinical and experimental nephrology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed, 13 citations in OpenAlex.
- Pierson syndrome with numerous dilated tubules masquerading as autosomal recessive polycystic kidney disease: a case report.CEN case reports · 2026Article
- Puncture approaches for ultrasound-guided kidney biopsy specimens: a pediatric model study using piglet kidneys.Pediatric research · 2025Article
- Increased kidney length in mild urinary tract dilatation is a significant prognostic factor for non-resolution.Pediatric nephrology (Berlin, Germany) · 2025Article
- Kidney volume measurement and predictive modeling in children aged 0-18 years using a computer-assisted surgery system.Scientific reports · 2025Article
- Risk factors for chronic kidney disease in Japanese infants with solitary functioning kidney.Clinical and experimental nephrology · 2025Article
- Perioperative Acute Kidney Injury and Prognosis of Infants With Down Syndrome and Congenital Heart Disease.Cureus · 2024Article
- Sonographic temporary nephromegaly in children during their first febrile urinary tract infection is a significant prognostic factor for recurrent infection.Scientific reports · 2024Article
- Pediatric Bilateral Hypoplastic Kidney Complicated With C1q Nephropathy: A Case Report.Cureus · 2024Article
- A case of tubulointerstitial nephritis mimicking acute focal bacterial nephritis. Lesson for the clinical nephrologist.Journal of nephrology · 2024Article
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12 authors at 9 institutions in 1 country.
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Abstract
backgroundThe assessment of kidney size is essential for treating kidney disease. However, there are no reliable and sufficiently robust ultrasonographic reference values or prediction formulas for kidney length in Japanese children, based on a sufficient number of participants.
methodsWe retrospectively analyzed kidney measurements by ultrasonography in children aged 18 years or younger from eight facilities throughout Japan between January 1991 and September 2018. Detailed reference values were developed by aggregating the left and right kidneys of boys and girls separately. Simple and practical reference values were developed by combining all the data from left and right kidneys and boys and girls. The estimation formulas for the average value and lower limit of the normal range for kidney length were developed based on regression analysis.
resultsBased on the aggregated kidney length data of 1984 participants (3968 kidneys), detailed reference values and simple reference values for kidney length were determined. From the regression analysis, the formula for calculating the average kidney length was generated as "kidney length (cm) = body height (m) × 5 + 2", and that for predicting the lower limit of normal kidney length in children under 130 cm was calculated as "lower limit (cm) = 0.85 × [body height (m) × 5 + 2]".
conclusionDetailed ultrasonographic reference values of kidney length for Japanese children and simple reference values and estimation formulas for daily practice have been established.
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