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A, B. Sonogram obtained immediately after birth in a male neonate shows significant hydronephrosis in the left (A) and right (B) kidneys. C. Transverse sonogram of the pelvis shows a collapsed bladder with thickened wall (arrows). D, E. Voiding cystourethrography shows severe reflux bilaterally, multiple bladder diverticula, and a distended posterior urethra (arrow), consistent with posterior urethral valve.
