Table 1.

AAST splenic laceration grading by CT. Other findings on CT not included in AAST criteria but important for triaging patients include active extravasation and pseudoaneurysm

	Grade I	Grade II	Grade III	Grade IV	Grade V
Subcapsular hematoma extent	< 10% of surface area	10–50% of splenic surface area	> 50% of splenic surface area, ruptured subcapsular hematoma,	N/A	N/A
Laceration depth	< 1 cm	1-5 cm	>5 cm	N/A	N/A
Other				Laceration of vessels leading to > 25% devascularization	Shattered spleen, complete devascularization