After a 4-hour labor, a 31-year-old G4 P3 woman undergoes an uneventful vaginal delivery of an infant over an intact perineum. During her labor, she is noted to have mild variable decelerations and accelerations that increase 20 beats per minute (bpm) above the baseline heart rate. At delivery, the male baby has Apgar scores of 8 at 1 minute, and 9 at 5 minutes. A slight lengthening of the cord occurs after 28 minutes along with a small gush of blood per vagina.

As the placenta is being delivered, a shaggy, reddish, bulging mass is noted at the introitus around the placenta. What is the most probable diagnosis and which complication can occur in this patient? *This patient case is from Docplexus Editorial Team for educative purpose only. Source: Case Files Obstetrics Gynecology