Table 2.

CT severity index (CTSI) for spleen and liver injury (AAST): CTSI

Spleen		Liver
Grade	Injury description	Grade	Injury description
I	Subcapsular haematoma < 1 cm depth	I	Subcapsular haematoma < 1 cm depth
	Laceration < 1 cm depth		Laceration < 1 cm depth
	Parenchymal haematoma < 1 cm diameter		Parenchymal haematoma < 1 cm diameter
II	Subcapsular haematoma 1–3 cm depth	II	Subcapsular haematoma 1–5 cm depth
	Laceration 1–3 cm parenchymal depth		laceration 1–5 cm depth
	Parenchymal haematoma 1–3 cm diameter		Parenchymal haematoma 1–5 cm diameter
III	Laceration > 3 cm depth	III	Laceration > 5 cm depth
	Parenchymal haematoma > 3 cm diameter		Parenchymal haematoma > 5 cm diameter
			Subcapsular haematoma > 5 cm depth
IVA	Active intraparenchymal and subcapsular splenic bleeding	IVA	Active intraparenchymal and subcapsular splenic bleeding
	Splenic vascular injury (pseudoaneurysm or AV-fistula)		Hepatic vascular injury (pseudoaneurysm or AV-fistula)
	Shattered spleen		Shattered liver
IVB	Active intraperitoneal bleeding	IVB	Active intraperitoneal bleeding