splenic Injury Grading by CT abdomen findings

Splenic Injury Grading by CT abdomen findings
AAST organ injury scale for splenic injuries – modified CT version (Federle et al 1998)
Grade
Injury
Description
I
Hematoma
Subcapsular, nonexpanding, <10% surface area
Laceration
Capsular tear, nonbleeding, <1cm parenchymal depth
II
Hematoma
Subcapsular, nonexpanding, 10-15% surface areaIntraparenchymal, <2cm diameter, nonexpanding
Laceration
Capsular tear, active bleeding, 1-3cm parenchymal depth
III
Hematoma
Subcapsular, >50% surface area or expandingRuptured subcapsular hematoma with active bleedingIntraparenchymal, >2cm diameter or expanding
Laceration
>3cm parenchymal depth
IV
Hematoma
Ruptured intraparenchymal hematoma with active bleeding
Laceration
Involving segmental or hilar vessels producing devascularization >25%
V
Laceration
Shattered spleen
Vascular
Hilar vascular injury that devascularizes spleen Advance one grade for multiple injuries to same organ up to grade III


Ref: http://www.wikiradiography.com/page/Splenic+Injury