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Factors affecting spontaneous resolution of hematuria in childhood nutcracker syndrome

 Jae Il Shin  ;  Jee Min Park  ;  Soon Min Lee  ;  Youn Ho Shin  ;  Ji Hong Kim  ;  Jae Seung Lee  ;  Myung Joon Kim 
 PEDIATRIC NEPHROLOGY, Vol.20(5) : 609-613, 2005 
Journal Title
Issue Date
Adolescent ; Aorta ; Blood Flow Velocity ; Body Mass Index ; Child ; Child, Preschool ; Female ; Hematuria/diagnostic imaging ; Hematuria/physiopathology* ; Humans ; Male ; Mesenteric Artery, Superior ; Peripheral Vascular Diseases/diagnostic imaging ; Peripheral Vascular Diseases/physiopathology* ; Remission, Spontaneous ; Renal Veins/diagnostic imaging ; Renal Veins/physiology* ; Retrospective Studies ; Ultrasonography, Doppler
Nutcracker syndrome ; Hematuria ; Resolution ; Peak velocity ; Body mass index
To identify factors affecting spontaneous resolution of hematuria in children with nutcracker syndrome, 20 patients diagnosed as having nutcracker syndrome using renal Doppler ultrasound (US) were analyzed retrospectively. Sixteen patients had microscopic hematuria, and four had gross hematuria at presentation. The mean age was 10.6 years (range 2.5–14 years). All underwent a follow-up Doppler US examination after a mean period of 1.4 years (range 0.5–3.5 years) after the first US was performed, and height and weight were measured at the time of US. At the time of follow-up US, hematuria disappeared in 15 patients and improved in 3. The peak velocity (PV) ratios of the left renal vein (LRV) at the follow-up US decreased significantly when compared to the first US examination (7.74±2.64 vs 3.50±1.09, p <0.0001), and height (147.4±20.1 vs 152.3±18.8 cm) and weight (36.1±10.9 vs 42.3±12.7 kg) increased ( p <0.0001). Changes in the PV ratios of the LRV correlated positively with changes in the PV at the aortomesenteric portion ( r =0.569, p =0.009). Changes in the PV at the aortomesenteric portion correlated negatively with changes in body mass index (BMI) ( r =−0.543, p =0.013). Although spontaneous resolution of hematuria in children with nutcracker syndrome is obscure, our findings suggest the increase in BMI may be a possible hemodynamic factor.
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1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Pediatrics (소아과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Myung Joon(김명준) ORCID logo https://orcid.org/0000-0002-4608-0275
Kim, Ji Hong(김지홍) ORCID logo https://orcid.org/0000-0001-5352-5423
Lee, Jae Seung(이재승)
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