Table 1: Causes of spontaneous retroperitoneal hemorrhage.
| Systemic | Others |
| Thrombocytopenic purpura | Renal cystic ruptura |
| Leucemia | Renal calculi |
| Hemofilia | Nephroesclerosis |
| Policitemia | Pyelonephritis |
| Anticoagulant therapy | Renal tuberculosis |
| Renal cortical abscesso | |
| Nephritis |