Types 2 (Renal Trauma)

hage_3a_n.jpg and hage_3b_n.jpg: Schoolchild with blunt abdominal trauma and microhematuria. Ultrasound of the kidney on the day of trauma and on follow-up: There is a perirenal ultrasound shadow on the ventral side; in addition, there are ultrasound shadows perpendicular to the surface at the limit between the upper pole and the middle of the kidney, and rounded calices. On follow-up a small line of separation between upper pole and the middle of the kidney becomes visible which includes at least two thirds of the cortical thickness. The first examination on the day of trauma shows a probable grade 2 (II) renal trauma, and on follow-up a grade 3 (III) renal trauma because the laceration is more than 1 cm deep in the renal cortex. According to our experiences renal trauma (which is also true for trauma to the spleen, liver, and other parenchymatous organs) can only be defined precisely during the second ultrasound 1 to 2 days after the trauma.