[Atraumatic retroperitoneal hemorrhage--interdisciplinary and differential diagnostic considerations based on a case report].

: The differential-diagnostic strategy and the order of precedence of most diverse radiologic diagnostic procedures are discussed based on a case of retroperitoneal bleeding. Apart from iatrogen-caused bleedings, the therapeutic anticoagulant therapy in the context of the patient's disease, haemodialysis or a rare, spontaneously-occurring retroperitoneal bleeding play a substantial role. In the order of precedence of radiologic diagnostic procedures for fast diagnosis of a retroperitoneal haematoma, the abdomen CT-scan is the preferred method.