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Sonographic renal length and volume of normal Thai children versus their Chinese and Western counterparts

Clinical and Experimental Pediatrics 2020년 63권 12호 p.491 ~ 498
Rongviriyapanich Chantima, Sakunchit Thanarat, Sudla Chirawat, Mungkung Supamas, Pongnapang Napapong, Yeong Chai Hong,
소속 상세정보
 ( Rongviriyapanich Chantima ) - Mahidol University Faculty of Medicine Siriraj Hospital Department of Radiology
 ( Sakunchit Thanarat ) - Mahidol University Faculty of Medicine Siriraj Hospital Department of Radiology
 ( Sudla Chirawat ) - Mahidol University Faculty of Medicine Siriraj Hospital Department of Radiology
 ( Mungkung Supamas ) - Mueang Narai Hospital Department of Radiology
 ( Pongnapang Napapong ) - Mahidol University Faculty of Medical Technology Department of Radiological Technology
 ( Yeong Chai Hong ) - Taylor’s University Faculty of Health and Medical Sciences School of Medicine

Abstract


Background: Renal size is an important indicator in the diagnosis of renal diseases and urinary tract infections in children.

Purpose: The purpose of this study is twofold. First, it aimed to measure the renal length and calculate the renal volume of normal Thai children using 2-dimensional ultrasonography (2D-US) and study their correlations with somatic parameters. Second, it aimed to compare the age-specific renal size of normal Thai children with the published data of their Western and Chinese counterparts.

Methods: A total of 321 children (150 boys, 171 girls; age, 6?15 years) with a normal renal profile were prospectively recruited. All subjects underwent 2D-US by an experienced pediatric radiologist and the renal length, width, and depth were measured. Renal volume was calculated using the ellipsoid formula as recommended. The data were compared between the left and right kidneys, the sexes, and various somatic parameters. The age-specific renal lengths were compared using a nomogram derived from a Western cohort that is currently referred by many Thailand hospitals, while the renal volumes were compared with the published data of a Chinese cohort.

Results: No statistically significant difference (P<0.05) was found between sexes or the right and left kidneys. The renal sizes had strong correlations with height, weight, body surface area, and age but not with body mass index. The renal length of the Thai children was moderately correlated (r=0.59) with that of the Western cohort, while the age-specific renal volume was significantly smaller (P<0.05) than that of the Chinese children.

Conclusion: Therefore, we concluded that the age-specific renal length and volume obtained by 2D-US would vary between children in different regions and may not be suitably used as an international standard for diagnosis, although further studies may be needed to confirm our findings.

키워드

Two-dimensional ultrasonography; Child; Renal length; Renal volume; Thailand

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