Lu TIAN, Yong QIN, Jinhua CAI. Prevalence and clinical significance of nutcracker phenomenon of the left renal vein in children[J]. Journal of Third Military Medical University, 2017, 39(13): 1387-1391.
DOI:
Lu TIAN, Yong QIN, Jinhua CAI. Prevalence and clinical significance of nutcracker phenomenon of the left renal vein in children[J]. Journal of Third Military Medical University, 2017, 39(13): 1387-1391. DOI: 10.16016/j.1000-5404.201610151.
Prevalence and clinical significance of nutcracker phenomenon of the left renal vein in children
To determine the proportion of the children with nutcracker phenomenon
and explore the clinical significance of the phenomenon.
Methods
2
A retrospectively study was carried out on the children who underwent computed tomographic angiography (CTA) due to non-renal related diseases in our department of radiology from January 2012 to March 2016. The kids suffering from the diseases associated with left kidney
left renal vein or variation
or abnormal results of routine urine test were excluded. There were 246 children enrolled in this study
including 131 boys and 115 girls
atamean age of 4.94±3.48 years (ranging from 1 month to 13 years). According to their age
the children were divided into 7 groups: the infant group (aged 1 month to < 1 year)
and 6 other groups with 2 years interval of age. The nutcracker phenomenon was defined as the maximum diameter of left renal vein in the renal helium (D2) was 3 times larger than the diameter (D1) of left renal vein between the abdominal aorta (AA) and superior mesenteric artery (SMA) and the aortomesenteric angle (AMA) between AA and AMA less than 45°. The proportion of children with the nutcracker phenomenon and the variation of AMA were analyzed.
Results
2
In the 246 subjects
nutcracker phenomenon was detected in 34 children (13.82%)
with 0 % in the infant group
and 5.77% (3/52)
12.20% (5/41)
16.67% (8/48)
18.75% (6/32)
23.81% (5/21) and 28.00% (7/25) in order in the other 6 groups. There was a significant trend in the proportion of nutcracker phenomenon among the different aged group (
Chi
square=13.879
P
<
0.001). The occurrence rate of nutcracker phenomenon was increased with the age increase
while the angel of AMA become smaller.
Conclusion
2
Nutcracker phenomenon accounts for 13.82% among normal children. It can be normal anatomical variation in some health children. The awareness of the phenomenon can avoid misdiagnosing it as nutcracker syndrome.
关键词
Keywords
references
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