“…Local or systemic conditions impacting the retroperitoneal organs or blood vessels can result in spontaneous retroperitoneal hemorrhage. Examples of such conditions include benign or malignant tumors of the kidney or adrenal gland (Brodey et al, 1982;Tappe et al, 1997), hemangioma (González-Valverde et al, 2007), vascular malformation, thrombosis, pancreatitis or pancreatic cancer, the use of anticoagulants and antiplatelet drugs (Melde, 2003;Otrock et al, 2006;Daliakopoulos et al, 2008), hemophilia, and leukemia (Vayá et al, 2003).…”