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Àü»óÇö/Sang Hyeon Cheon Á¶Ã¶±Ô/ÇÑ»ó¿ø/Ãֽ°­/±èº´±æ/ÀÌÀç½Â/Chul Kyu Cho/Sang Won Han/Seung Kang Choi/Pyung Kil Kim/Jae Seung Lee

Abstract

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Purpose: In order to help identifying the subgroups of primary megaureter who neck
operation, we retrospectively reviewed the clinical records of the patients who had
primary megaureters without vesicoureteral reflux.
Materials and Methods: We analyzed the initial differential renal function, UTI rate
and the incidence of breakthrough infection of each group. Every patient had abdominal
renal ultrasonograms and diuretic renograms during his/her follow-up period and the
calyceal changes and differential renal functions were assessed.
Results: Those who underwent operation in their neonatal period did not have
considerable postoperative problems. Those with primary obstructive megaureters who
underwent operation had severe calyceal dilatation at the initial evaluation. However,
there were severe calyceal dilatation in the nonobstructive-nonrefluxing group, too.
Those who had poor differential renal function at the initial evaluation had a greater
chance to have surgical correction. Those who were classified as primary obstructive
megaureter and underwent operation had a higher rate of urinary tract infection than the
counterpart who had consevative care.
Conclusions: In order to differentiate those who need operation, we think that the
differential renal function, the calyceal morphology, The diuretic renogram curve and
urinary tract infection all act as combined factors altogether and not a single factor acts
as a contributing factor. That is, if the diuretic renogram cutie is obstructive and there
is urinary tract infection in the initial evaluation or if there is severe calyceal dilatation
and decline of the differential renal function, we think that surgical correction should be
under consideration. In contrast, if the diuretic renogram cutie is not obstructive and
there are other factors combined, we think that conservative treatment should be the
choice only if there is no breakthrough infection.

Å°¿öµå

Megaureter; Primary obstructive; Nonobstructive-nonrefluxing;

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