Volume 11, Number 3Case ReviewPlacenta Percreta and the UrologistJacob RajferRamdev KonijetiAsghar AskariPlacenta percreta, the rarest and most severe form of placenta accreta, caninvolve the urinary bladder. Because of its propensity for severe hemorrhage,it is a potentially life-threatening condition. Although commonly discoveredat the time of delivery, antenatal diagnosis may be achieved with ultrasound,magnetic resonance imaging, and/or cystoscopy. Every attempt should bemade to minimize potential for blood loss by avoiding removal of the placentaat the time of delivery and either performing a hysterectomy or usingmethotrexate therapy to ablate the residual placenta in the postpartum period.If hemorrhage does occur during delivery, immediate surgical removalof the uterus should be considered and, depending on the severity of thehemorrhage and the depth of invasion of the placenta into the bladder,excision and/or reconstruction of the bladder may be necessary.[Rev Urol. 2009;11(3):173-176 doi: 10.3909/riu0440]© 2009 MedReviews®, LLCPlacenta percretaPlacenta accretaBladder invasion