A
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Changes confined to the lower urinary tract (posterior urethra and urinary bladder) with normal ureters and kidneys. [(I) Responding to therapy i. (II) Not responding to therapy.]
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B
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Involvement of the upper tracts, in addition to the lower tract changes. (Hydroureteronephrosis/megaureter/VUR) [(I) Responding to therapy ii. (II) Not responding to therapy.]
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C
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Evidence of renal parenchymal damage iii. (Inherent renal dysplasia/acquired renal scarring or abnormal renal function tests). [(I) Responding to therapy iv. (II) Not responding to therapy.]
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D
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Evidence of systemic complications v.
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E
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End-stage renal disease/chronic renal failure.
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