Ruptured femoral pseudoaneurysm presenting as a lateral abdominal wall hematoma

Lateral abdominal wall hematomas are rare. We describe a patient with a delayed rupture of a femoral artery pseudoaneurysm, who presented with such a hematoma. In contrast to other types of abdominal wall hematomas, which are often managed conservatively, a ruptured femoral artery pseudoaneurysm frequently requires emergent surgical intervention. Rupture of a pseudoaneurysm can be catastrophic. Due to the rising incidence of femoral artery pseudoaneuryms and shorter hospital stays, it is useful for the emergency physician to be familiar with the diagnosis and management of femoral artery pseudoaneurysms and their potentially life-threatening complications.