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Is Increased Echogenicity Related to a Decrease in Glomerular Filtration Rate? Objective Measurements in Pediatric Solitary Kidney Patients--A Retrospective Analysis.

Authors
 Yong Seung Lee  ;  Mi-Jung Lee  ;  Myung-Joon Kim  ;  Young Jae Im  ;  Sang Woon Kim  ;  Neddy Lee Lim  ;  Sang Won Han 
Citation
 PLOS ONE, Vol.10(8) : e0133577, 2015 
Journal Title
PLOS ONE
Issue Date
2015
MeSH
Adolescent ; Child ; Child, Preschool ; Cystatin C/blood ; Female ; Glomerular Filtration Rate* ; Humans ; Infant ; Kidney/abnormalities* ; Kidney/diagnostic imaging* ; Kidney/physiopathology ; Male ; Retrospective Studies ; Ultrasonography
Abstract
Quantitative measurements of renal echogenicity using a graphic program show close correlation with renal histology in adult patients, but this has neither been applied in pediatric patients nor correlated with glomerular filtration rate (GFR). To determine the direct relationship between echogenicity and GFR, we retrospectively analyzed 91 patients with a solitary functioning kidney under the age of 10, who underwent ultrasonography and serum cystatin C evaluation on a single day between January 2013 and December 2014. Echogenicity was quantified as previously reported. Echogenicity and kidney length were correlated with age-matched values of serum cystatin C-based GFR. Evaluation was performed at a median age of 17.1 months. GFR was low for age in eight of 54 right solitary kidney patients and four of 37 left solitary kidney patients. The right kidney-liver ratio was significantly elevated in the right decreased GFR group, while the left kidney-spleen ratio was not different in the left decreased GFR group. Age-matched longitudinal kidney length ratios were similar between the decreased and normal GFR groups for both sides. This is the first report to objectively prove the relationship between echogenicity and renal function in patients with a right solitary kidney. The right kidney-liver echogenicity ratio, measured objectively, showed feasibility in clinical practice as it showed a close relationship with decreased renal function when increased. However, absolute kidney echogenicity values, or the left kidney-spleen echogenicity ratio, were not independent markers for decreased renal function.
Files in This Item:
T201504272.pdf Download
DOI
10.1371/journal.pone.0133577
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Urology (비뇨의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Myung Joon(김명준) ORCID logo https://orcid.org/0000-0002-4608-0275
Kim, Sang Woon(김상운) ORCID logo https://orcid.org/0000-0002-5790-1948
Lim, Neddy Lee(림네디리)
Lee, Mi-Jung(이미정) ORCID logo https://orcid.org/0000-0003-3244-9171
Lee, Yong Seung(이용승) ORCID logo https://orcid.org/0000-0003-3778-9888
Im, Young Jae(임영재)
Han, Sang Won(한상원) ORCID logo https://orcid.org/0000-0003-0941-1300
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/141759
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