[Kidney angiomyolipoma as aetiology of haemorragic shock]

This is a case of retroperitoneal hematoma and hypovolemic shock as a presentation of renal angiomyolipoma, a rarely benign and asymptomatic tumor. The massive and spontaneous bleeding of the tumor was diagnosed by an abdominal ecography and confirmed by an abdominal computer tomography in the emergency room. Although that kind of tumor needs non-aggressive treatment, as a general rule, because of the size and severity of the following symptoms, the patient has been submitted to a selective embolization of the renal mass when he was hemodinamically stabilized. The evolution was favorable; it was not necessary to do more aggressive surgical handling neither to urgently remove the angiomyolipoma.