A Rare Presentation of Retroperitoneal Hemorrhage Following a Spontaneous Vaginal Delivery.

Spontaneous retroperitoneal hemorrhage is a rare but potentially fatal condition characterized by bleeding into the retroperitoneal space, located behind the abdominal cavity. In postpartum women, case reports are the primary source of information regarding this rare presentation, which typically arises from uterine artery lacerations, uterine rupture, extension of vaginal hematomas, or, in extremely rare instances, the rupture of ovarian artery aneurysms. Diagnosing a retroperitoneal hemorrhage can be particularly challenging due to its concealed location and the nonspecific nature of its symptoms, often leading to delayed recognition. The management of such bleeds presents additional difficulties, given that surgical access to the retroperitoneal space is complex, and the bleeding may spontaneously tamponade over time. Furthermore, current knowledge of retroperitoneal hemorrhage management is largely based on cases secondary to trauma, which are more common. This knowledge may not always be directly applicable to postpartum spontaneous hemorrhages, making the management of this condition even more complex. As such, it is crucial to document and report these cases to enhance our understanding of postpartum spontaneous retroperitoneal hemorrhages. By doing so, we aim to improve early detection and refine management strategies, ultimately reducing maternal morbidity and mortality associated with this condition. This case describes a 32-year-old woman who presented two days after a spontaneous vaginal birth with a large retroperitoneal bleed secondary to a ruptured ovarian artery aneurysm. She arrived at a rural emergency department in hemorrhagic shock, with a CT scan confirming retroperitoneal bleeding. The patient was urgently transferred to a tertiary center, where exploratory laparotomy was considered. However, she was successfully managed with gelfoam angioembolization and closely monitored with serial imaging.