The Colyte renal scan.

Fecal impaction is a rare cause of urinary tract obstruction that is reversible with removal of the stool. In this 7-year-old girl with bilateral duplicated collecting systems, non-neurogenic bladder (Hinman syndrome) and encopresis, the initial furosemide renal scintigraphic examination showed an obstructed left lower moiety. Because of this unusual pattern of obstruction in a duplicated system along with radiographic evidence of massive fecal impaction, a repeated furosemide renal study performed after aggressive Colyte bowel cleansing showed resolution of the left lower moiety obstruction. The authors believe theirs is the first reported case of fecal impaction causing urinary tract obstruction in Hinman syndrome demonstrated on renal furosemide scintigraphy.