Spontaneous retroperitoneal hemorrhage secondary to a renal cause

Spontaneous rupture of normal renal parenchyma must indeed be rare. Virtually all patients in this paper had a significant abnormality that presented with bleeding. Our Case 5 is the only one without a clear underlying pathologic entity. We should stress the high incidence of associated disease in kidneys that bleed “spontaneously” and therefore the need for exploration and/or nephrectomy.