The significance of delayed post-traumatic renal hemorrhage.

An impression is presented pertaining to the significance of delayed recurrent post-traumatic renal hematuria, documented by 3 case reports and an appraisal of relevant data selected from prior reports. Adjunctive features may include prolonged initial hematuria despite acceptable radiographic features, a preponderant relationship to penetrating (knife and low velocity missile) wounds and a tendency to respond temporarily to conservative management.