Colonoscopic Splenic Injury: A Simplified Radiologic Approach

Table 1

The American Association of Surgeons for Trauma (AAST). Splenic Injury Grading Scale (2008).

Grade	Injury	Criteria
I	Hematoma	Subcapsular, <10% of surface area
	Laceration	Capsular tear, <1 cm parenchymal depth
II	Hematoma	Subcapsular, 10–50% of surface area; intraparenchymal, <5 cm diameter
	Laceration	Subcapsular, 1 cm to 3 cm parenchymal depth that does not involve a trabecular vessel
III	Hematoma	Subcapsular, >50% of surface area or expanding; ruptured subcapsular or parenchymal hematoma; intraparenchymal hematoma, ≥5 cm diameter or expanding
	Laceration	>3 cm parenchymal depth or involving trabecular vessels
IV	Laceration	Laceration involving segmental or hilar vessels producing major devascularization of >25% of the spleen
V	Hematoma	Completely shattered spleen
	Laceration	Hilar vascular injury that devascularizes the spleen

one grade for multiple injuries, up to grade III.
Reprinted from [4], with permission from Elsevier.
License number 3917700781230.
Source: http://www.sciencedirect.com/science/article/pii/S1072751508011010.