Extravasating uterine pseudoaneurysm: A rare cause of postpartum haemorrhage

Postpartum haemorrhage (PPH) remains one of the leading causes of maternal death worldwide and can be classified as either immediate (primary) or delayed (secondary) according to the onset time - before or after 24 hours postpartum. Uterine pseudoaneurysm is a rare cause of PPH that has been suggested to arise from abnormal vascular regression and a recurrent vascular healing state, such as a vascular stricture and relaxation with thrombin deposits after placental expulsion. With advances in multidetector computed tomography, 3D-computed tomography with angiography can aid in identifying the location and originating vessels of the pseudoaneurysm via fast and clear 3D images. Once a bleeding pseudoaneurysm is diagnosed as the cause of PPH, conservative management is frequently unsuccessful in controlling bleeding. Transcatheter uterine arterial embolisation appears to be the treatment of choice in haemodynamically stable women.