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Table 2 Grades of hydronephrosis preoperative and time of improvement

From: The prognostic value of histopathological pattern of the pelviureteric junction in the outcome of pyeloplasty in children

Grade of hydronephrosis preoperative (no) Improved at 3 months (%) Improved at 6 months (%) Improved at 12 months (%) No improvement (%)
Grade III (27) 14 (51.85%) 8 (29.62%) 4 (14.81%) 1 (3.7%)
Grade IV (23) 10 (43.48%) 8 (34.78%) 4 (17.39%) 1 (4.35%)