Table 1.

Splenic trauma grading systems [34, 35, 45]

Grading system	Criteria
Baltimore	Grade	1	2	3	4a	4b
	Subcapsular hematoma	<1 cm	1–3 cm	>3 cm
	Parenchymal hematoma	<1 cm	1–3 cm	>3 cm
	Laceration	<1 cm	1–3 cm	>3 cm	Shattered spleen
	Miscellaneous			Splenic capsular disruption	Active intraparenchymal and subcapsular bleeding splenic vascular injury	Active intraperitoneal bleeding

AAST	Grade	I	II	III	IV	V
	Hematoma	<10%	10–50% <5 cm	>50% >5 cm
	Laceration	<1 cm	1–3 cm	>3 cm	>25% devascularization	Completely shattered spleen
	Vascular injury					Hilar vascular injury with devascularized spleen