Prolapsed simple ureterocele: evaluation by transvaginal voiding sono-urethrography.

Prolapsed ureterocele is a rare complication that may present with acute bladder outlet obstruction, generally in female infants. We present a case of prolapsed simple ureterocele in an adult woman, evaluated by transvaginal micturating sono-urethrography. High-frequency transvaginal sonography of the urethra performed during micturation revealed the relationship of the ureterocele with the urethral wall.