[Ectopic vaginal ureterocele in ureter from the middle caliceal group and homolateral triplication]

We present the case of a 12-year old girl that presented during a four month period urinary incontinence alternating with normal micturitions, vaginal flow and bacteriuria. IVP shows a pyeloureteral duplication in the right side. The superior and inferior calyceal groups meet in a normal ureter whereas the middle calyceal group is open in one megaureter with ureterocele in medial and extravesical situation, probably vaginal or uterine. During operation a third blind ureter was found connected to the "ureterocele" and medial to the ectopic megaureter. A bibliographical survey is made and surgical and embriological data are commented.