The Uterine Vessel as a Cause of Postpartum Hemorrhage and Vascular Retained Products of Conception Following the Resolution of a Low-Lying Placenta.

The risk of postpartum hemorrhage (PPH) remains substantial even in pregnant women with a resolved low-lying placenta. Additionally, some cases of postpartum retained products of conception (RPOC) have been associated with placental complications during delivery, while the majority lack an identifiable cause or risk factor. This report highlights an abnormal vessel directed toward the lower uterine segment, identified as the cause of PPH and subsequent RPOC following the resolution of a low-lying placenta. Although a low-lying placenta observed in the second trimester resolves in most cases, it necessitates heightened vigilance regarding the risk of PPH and subsequent vascular RPOC.