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Table 2 American Association for the Surgery of Trauma organ injury severity scale for the kidney

From: Autosomal dominant polycystic kidney disease and minimal trauma: medical review and case report

Grade Type Description
I Contusion Microscopic or gross hematuria, urologic studies normal
Hematoma Subcapsular, nonexpanding hematoma without parenchymal laceration
II Hematoma Non-expanding peri-renal hematoma confined to renal retroperitoneum
Laceration Laceration < 1 cm depth of renal cortex without urinary extravasation
III Laceration Laceration > 1 cm depth of renal cortex without collecting system rupture or urinary extravasation
IV Laceration Parenchymal laceration extending through renal cortex, medulla, and collecting system
Vascular Main renal artery or vein injury with contained hemorrhage
V Laceration Completely shattered kidney
Vascular Avulsion of renal hilum, devascularizing the kidney
  1. Santucci RA, McAninch JW, Safir M, et al. Validation of the American Association for the Surgery of Trauma organ injury severity scale for the kidney. J Trauma 2001; 50:195. Copyright © 2001 Lippincott Williams & Wilkins