[A Rare Cause of Perinatal Postrenal Failure with Megalourethra].

We present a case of a premature infant with a presumed obstructive uropathy found to be a megalourethra leading to a perinatal postrenal failure. A megalourethra - an uncommon cause of urethral dilatation - is a congenital, non-obstructive anomaly of the penile erectile tissue. We think that a distal stenosis resulted in dysplasia of the penile tissue and an aspect of a megalourethra.

Dystopic dysplastic kidney with ectopic ureter: improved localization by fusion of MR urography and (99m)Tc-DMSA SPECT datasets.

We report a 12-year-old girl with a long history of constant urinary dribbling and apparently only a left kidney. Using a multimodality approach involving the fusion of MR urography and (99m)Tc-dimercaptosuccinic acid (DMSA) SPECT datasets, it was finally possible to exactly localize the very small dystopic, dysplastic right kidney and its ectopic ureter draining into the vagina.