What is retroperitoneal hemorrhage?

History of trauma Critically ill patients taking anticoagulation or antiplatelet medications Patients with femoral vascular access, a common cause of clinically silent, large retroperitoneal hematoma Symptoms and signs : depend on location of retroperitoneal hemorrhage include femoral nerve palsy Flank and groin ecchymosis late sign of retroperitoneal hemorrhage Cardinal laboratory finding is a falling hematocrit Perform serial hematocrit evaluations and assess coagulation CT scan differentiates among hematoma, tumor, and abscess