From: Renal trauma: a 5-year retrospective review in single institution
Grade | Type of injury | Description of injury |
---|---|---|
I | Contusion | Microscopic or gross hematuria, urologic studies normal |
Hematoma | Subcapsular, non-expanding without parenchymal laceration | |
II | Hematoma | Non-expanding perirenal hematoma confirmed to renal retroperitoneum |
Laceration | <1.0 cm parenchymal depth of renal cortex without urinary extravasation | |
III | Laceration | >1.0 cm parenchymal 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 which devascularizes the kidney |