Document Detail

Clinical characteristics of primary vesicoureteral reflux in infants: multicenter retrospective study in Japan.
MedLine Citation:
PMID:  12478178     Owner:  NLM     Status:  MEDLINE    
PURPOSE: We evaluate clinical characteristics of primary vesicoureteral reflux in infants in a multicenter study in Japan with special reference to the relation of renal parenchymal damage to urinary tract infection and gender. MATERIALS AND METHODS: Infants younger than 1 year old with primary vesicoureteral reflux were recruited from 14 hospitals during the 3-year registration period beginning in January 1996 and ending in December 1998. Various clinical parameters as well as renal parenchymal lesion on dimercaptosuccinic acid scintigraphy were evaluated. RESULTS: Of 356 infants enrolled 296 (83%) were male and 60 (17%) were female. In 85% of infants presenting symptom was febrile urinary tract infection. There were 204 bilateral (57%) and 152 unilateral (43%) cases. Reflux was bilateral in 56% of males versus 65% of females, and high grade (grades IV and V) in 58% of males versus 55% of females. Diffuse parenchymal lesion was similarly noted in infants with or without prior urinary tract infection (38% and 46%, respectively) and was more often noted in male than in female infants (42% versus 25%). CONCLUSIONS: Despite the current use of screening prenatal ultrasound, many infants are still diagnosed as having vesicoureteral reflux only after the occurrence of urinary tract infection. The greater severity of renal parenchymal lesion in male infants combined with similar incidence of diffuse parenchymal lesion in those with or without prior infection suggests preexisting congenital abnormalities in the male refluxing kidney.
Hideo Nakai; Hidehiro Kakizaki; Ryuichiro Konda; Yutaro Hayashi; Shozo Hosokawa; Satoru Kawaguchi; Hirofumi Matsuoka; Katsuya Nonomura; Kenji Shimada; Takeshi Kawamura;
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Publication Detail:
Type:  Journal Article; Multicenter Study    
Journal Detail:
Title:  The Journal of urology     Volume:  169     ISSN:  0022-5347     ISO Abbreviation:  J. Urol.     Publication Date:  2003 Jan 
Date Detail:
Created Date:  2002-12-12     Completed Date:  2003-01-09     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0376374     Medline TA:  J Urol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  309-12     Citation Subset:  AIM; IM    
Department of Urology, School of Medicine, Hokkaido University, Sapporo, Japan.
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MeSH Terms
Infant, Newborn
Kidney / radionuclide imaging
Retrospective Studies
Urinary Tract Infections / etiology
Vesico-Ureteral Reflux / complications,  congenital*,  diagnosis,  radionuclide imaging

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